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Finding the Fourth Proportional to 85,229.93, 127,699.29 and 60,221.58

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Solution

The fourth proportional to 85,229.93, 127,699.29 and 60,221.58 is: 90,229.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,229.93 : 127,699.29 = 60,221.58 : x
  2. Step 2: Convert to fraction form
    85,229.93/127,699.29 = 60,221.58/x
  3. Step 3: Cross multiply
    85,229.93x = 127,699.29 × 60,221.58
  4. Step 4: Simplify right side
    85,229.93x = 7,690,253,008.68
  5. Step 5: Solve for x
    x = 7,690,253,008.68/85,229.93
  6. Step 6: Final answer
    x = 90,229.49

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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.