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Finding the Fourth Proportional to 150,062.34, 206,987.79 and 89,585.70

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Solution

The fourth proportional to 150,062.34, 206,987.79 and 89,585.70 is: 123,569.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,062.34 : 206,987.79 = 89,585.70 : x
  2. Step 2: Convert to fraction form
    150,062.34/206,987.79 = 89,585.70/x
  3. Step 3: Cross multiply
    150,062.34x = 206,987.79 × 89,585.70
  4. Step 4: Simplify right side
    150,062.34x = 18,543,146,058.60
  5. Step 5: Solve for x
    x = 18,543,146,058.60/150,062.34
  6. Step 6: Final answer
    x = 123,569.62

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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.