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Finding the Fourth Proportional to 138,551.60, 207,924.60 and 88,752.80

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Solution

The fourth proportional to 138,551.60, 207,924.60 and 88,752.80 is: 133,191.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,551.60 : 207,924.60 = 88,752.80 : x
  2. Step 2: Convert to fraction form
    138,551.60/207,924.60 = 88,752.80/x
  3. Step 3: Cross multiply
    138,551.60x = 207,924.60 × 88,752.80
  4. Step 4: Simplify right side
    138,551.60x = 18,453,890,438.88
  5. Step 5: Solve for x
    x = 18,453,890,438.88/138,551.60
  6. Step 6: Final answer
    x = 133,191.46

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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.