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Finding the Fourth Proportional to 101,110.20, 151,665.30 and 85,363.80

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Solution

The fourth proportional to 101,110.20, 151,665.30 and 85,363.80 is: 128,045.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,110.20 : 151,665.30 = 85,363.80 : x
  2. Step 2: Convert to fraction form
    101,110.20/151,665.30 = 85,363.80/x
  3. Step 3: Cross multiply
    101,110.20x = 151,665.30 × 85,363.80
  4. Step 4: Simplify right side
    101,110.20x = 12,946,726,336.14
  5. Step 5: Solve for x
    x = 12,946,726,336.14/101,110.20
  6. Step 6: Final answer
    x = 128,045.70

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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.