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Finding the Fourth Proportional to 141,885.71, 195,691.50 and 90,903.17

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Solution

The fourth proportional to 141,885.71, 195,691.50 and 90,903.17 is: 125,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,885.71 : 195,691.50 = 90,903.17 : x
  2. Step 2: Convert to fraction form
    141,885.71/195,691.50 = 90,903.17/x
  3. Step 3: Cross multiply
    141,885.71x = 195,691.50 × 90,903.17
  4. Step 4: Simplify right side
    141,885.71x = 17,788,978,181.28
  5. Step 5: Solve for x
    x = 17,788,978,181.28/141,885.71
  6. Step 6: Final answer
    x = 125,375.40

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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.