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Finding the Fourth Proportional to 138,446.30, 207,531.42 and 58,504.43

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Solution

The fourth proportional to 138,446.30, 207,531.42 and 58,504.43 is: 87,698.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,446.30 : 207,531.42 = 58,504.43 : x
  2. Step 2: Convert to fraction form
    138,446.30/207,531.42 = 58,504.43/x
  3. Step 3: Cross multiply
    138,446.30x = 207,531.42 × 58,504.43
  4. Step 4: Simplify right side
    138,446.30x = 12,141,506,396.53
  5. Step 5: Solve for x
    x = 12,141,506,396.53/138,446.30
  6. Step 6: Final answer
    x = 87,698.31

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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.