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Finding the Fourth Proportional to 88,687.60, 133,031.40 and 87,229.60

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Solution

The fourth proportional to 88,687.60, 133,031.40 and 87,229.60 is: 130,844.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,687.60 : 133,031.40 = 87,229.60 : x
  2. Step 2: Convert to fraction form
    88,687.60/133,031.40 = 87,229.60/x
  3. Step 3: Cross multiply
    88,687.60x = 133,031.40 × 87,229.60
  4. Step 4: Simplify right side
    88,687.60x = 11,604,275,809.44
  5. Step 5: Solve for x
    x = 11,604,275,809.44/88,687.60
  6. Step 6: Final answer
    x = 130,844.40

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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.