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Finding the Fourth Proportional to 138,544.92, 207,477.18 and 88,477.20

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Solution

The fourth proportional to 138,544.92, 207,477.18 and 88,477.20 is: 132,498.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,544.92 : 207,477.18 = 88,477.20 : x
  2. Step 2: Convert to fraction form
    138,544.92/207,477.18 = 88,477.20/x
  3. Step 3: Cross multiply
    138,544.92x = 207,477.18 × 88,477.20
  4. Step 4: Simplify right side
    138,544.92x = 18,356,999,950.30
  5. Step 5: Solve for x
    x = 18,356,999,950.30/138,544.92
  6. Step 6: Final answer
    x = 132,498.54

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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.