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Finding the Fourth Proportional to 138,336.80, 207,375.60 and 108,334.40

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Solution

The fourth proportional to 138,336.80, 207,375.60 and 108,334.40 is: 162,400.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,336.80 : 207,375.60 = 108,334.40 : x
  2. Step 2: Convert to fraction form
    138,336.80/207,375.60 = 108,334.40/x
  3. Step 3: Cross multiply
    138,336.80x = 207,375.60 × 108,334.40
  4. Step 4: Simplify right side
    138,336.80x = 22,465,911,200.64
  5. Step 5: Solve for x
    x = 22,465,911,200.64/138,336.80
  6. Step 6: Final answer
    x = 162,400.11

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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.