Home / 132,220,902.30-198,331,353.45-78,473,190.30

Finding the Fourth Proportional to 132,220,902.30, 198,331,353.45 and 78,473,190.30

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Solution

The fourth proportional to 132,220,902.30, 198,331,353.45 and 78,473,190.30 is: 117,709,785.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,220,902.30 : 198,331,353.45 = 78,473,190.30 : x
  2. Step 2: Convert to fraction form
    132,220,902.30/198,331,353.45 = 78,473,190.30/x
  3. Step 3: Cross multiply
    132,220,902.30x = 198,331,353.45 × 78,473,190.30
  4. Step 4: Simplify right side
    132,220,902.30x = 15,563,694,041,738,410
  5. Step 5: Solve for x
    x = 15,563,694,041,738,410/132,220,902.30
  6. Step 6: Final answer
    x = 117,709,785.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.