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Finding the Fourth Proportional to 146,787.71, 220,266.30 and 79,319.97

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Solution

The fourth proportional to 146,787.71, 220,266.30 and 79,319.97 is: 119,025.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,787.71 : 220,266.30 = 79,319.97 : x
  2. Step 2: Convert to fraction form
    146,787.71/220,266.30 = 79,319.97/x
  3. Step 3: Cross multiply
    146,787.71x = 220,266.30 × 79,319.97
  4. Step 4: Simplify right side
    146,787.71x = 17,471,516,605.46
  5. Step 5: Solve for x
    x = 17,471,516,605.46/146,787.71
  6. Step 6: Final answer
    x = 119,025.75

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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.