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Finding the Fourth Proportional to 138,423.60, 207,732.60 and 59,594.40

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Solution

The fourth proportional to 138,423.60, 207,732.60 and 59,594.40 is: 89,433.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,423.60 : 207,732.60 = 59,594.40 : x
  2. Step 2: Convert to fraction form
    138,423.60/207,732.60 = 59,594.40/x
  3. Step 3: Cross multiply
    138,423.60x = 207,732.60 × 59,594.40
  4. Step 4: Simplify right side
    138,423.60x = 12,379,699,657.44
  5. Step 5: Solve for x
    x = 12,379,699,657.44/138,423.60
  6. Step 6: Final answer
    x = 89,433.45

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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.