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Finding the Fourth Proportional to 138,343.60, 207,612.60 and 59,514.40

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Solution

The fourth proportional to 138,343.60, 207,612.60 and 59,514.40 is: 89,313.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,343.60 : 207,612.60 = 59,514.40 : x
  2. Step 2: Convert to fraction form
    138,343.60/207,612.60 = 59,514.40/x
  3. Step 3: Cross multiply
    138,343.60x = 207,612.60 × 59,514.40
  4. Step 4: Simplify right side
    138,343.60x = 12,355,939,321.44
  5. Step 5: Solve for x
    x = 12,355,939,321.44/138,343.60
  6. Step 6: Final answer
    x = 89,313.41

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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.