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Finding the Fourth Proportional to 102,689.67, 141,712.83 and 60,248.91

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Solution

The fourth proportional to 102,689.67, 141,712.83 and 60,248.91 is: 83,144.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,689.67 : 141,712.83 = 60,248.91 : x
  2. Step 2: Convert to fraction form
    102,689.67/141,712.83 = 60,248.91/x
  3. Step 3: Cross multiply
    102,689.67x = 141,712.83 × 60,248.91
  4. Step 4: Simplify right side
    102,689.67x = 8,538,043,540.52
  5. Step 5: Solve for x
    x = 8,538,043,540.52/102,689.67
  6. Step 6: Final answer
    x = 83,144.13

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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.