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Finding the Fourth Proportional to 157,691.80, 236,454.47 and 68,841.28

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Solution

The fourth proportional to 157,691.80, 236,454.47 and 68,841.28 is: 103,225.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,691.80 : 236,454.47 = 68,841.28 : x
  2. Step 2: Convert to fraction form
    157,691.80/236,454.47 = 68,841.28/x
  3. Step 3: Cross multiply
    157,691.80x = 236,454.47 × 68,841.28
  4. Step 4: Simplify right side
    157,691.80x = 16,277,828,376.52
  5. Step 5: Solve for x
    x = 16,277,828,376.52/157,691.80
  6. Step 6: Final answer
    x = 103,225.59

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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.