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Finding the Fourth Proportional to 99,489.60, 149,234.40 and 88,603.20

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Solution

The fourth proportional to 99,489.60, 149,234.40 and 88,603.20 is: 132,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,489.60 : 149,234.40 = 88,603.20 : x
  2. Step 2: Convert to fraction form
    99,489.60/149,234.40 = 88,603.20/x
  3. Step 3: Cross multiply
    99,489.60x = 149,234.40 × 88,603.20
  4. Step 4: Simplify right side
    99,489.60x = 13,222,645,390.08
  5. Step 5: Solve for x
    x = 13,222,645,390.08/99,489.60
  6. Step 6: Final answer
    x = 132,904.80

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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.