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Finding the Fourth Proportional to 138,487.68, 207,642.74 and 58,504

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Solution

The fourth proportional to 138,487.68, 207,642.74 and 58,504 is: 87,718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,487.68 : 207,642.74 = 58,504 : x
  2. Step 2: Convert to fraction form
    138,487.68/207,642.74 = 58,504/x
  3. Step 3: Cross multiply
    138,487.68x = 207,642.74 × 58,504
  4. Step 4: Simplify right side
    138,487.68x = 12,147,930,860.96
  5. Step 5: Solve for x
    x = 12,147,930,860.96/138,487.68
  6. Step 6: Final answer
    x = 87,718.49

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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.