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Finding the Fourth Proportional to 89,103.60, 133,655.40 and 88,489.20

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Solution

The fourth proportional to 89,103.60, 133,655.40 and 88,489.20 is: 132,733.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,103.60 : 133,655.40 = 88,489.20 : x
  2. Step 2: Convert to fraction form
    89,103.60/133,655.40 = 88,489.20/x
  3. Step 3: Cross multiply
    89,103.60x = 133,655.40 × 88,489.20
  4. Step 4: Simplify right side
    89,103.60x = 11,827,059,421.68
  5. Step 5: Solve for x
    x = 11,827,059,421.68/89,103.60
  6. Step 6: Final answer
    x = 132,733.80

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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.