Home / 142,181.27-196,205.00-78,517.70

Finding the Fourth Proportional to 142,181.27, 196,205.00 and 78,517.70

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Solution

The fourth proportional to 142,181.27, 196,205.00 and 78,517.70 is: 108,351.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,181.27 : 196,205.00 = 78,517.70 : x
  2. Step 2: Convert to fraction form
    142,181.27/196,205.00 = 78,517.70/x
  3. Step 3: Cross multiply
    142,181.27x = 196,205.00 × 78,517.70
  4. Step 4: Simplify right side
    142,181.27x = 15,405,564,543.77
  5. Step 5: Solve for x
    x = 15,405,564,543.77/142,181.27
  6. Step 6: Final answer
    x = 108,351.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.