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Finding the Fourth Proportional to 116,787.76, 161,167.29 and 66,486.76

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Solution

The fourth proportional to 116,787.76, 161,167.29 and 66,486.76 is: 91,751.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,787.76 : 161,167.29 = 66,486.76 : x
  2. Step 2: Convert to fraction form
    116,787.76/161,167.29 = 66,486.76/x
  3. Step 3: Cross multiply
    116,787.76x = 161,167.29 × 66,486.76
  4. Step 4: Simplify right side
    116,787.76x = 10,715,490,930.08
  5. Step 5: Solve for x
    x = 10,715,490,930.08/116,787.76
  6. Step 6: Final answer
    x = 91,751.83

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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.