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Finding the Fourth Proportional to 96,640.68, 133,365.54 and 72,398.70

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Solution

The fourth proportional to 96,640.68, 133,365.54 and 72,398.70 is: 99,911.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,640.68 : 133,365.54 = 72,398.70 : x
  2. Step 2: Convert to fraction form
    96,640.68/133,365.54 = 72,398.70/x
  3. Step 3: Cross multiply
    96,640.68x = 133,365.54 × 72,398.70
  4. Step 4: Simplify right side
    96,640.68x = 9,655,491,720.80
  5. Step 5: Solve for x
    x = 9,655,491,720.80/96,640.68
  6. Step 6: Final answer
    x = 99,911.26

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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.