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Finding the Fourth Proportional to 99,468.80, 149,284.80 and 98,691.20

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Solution

The fourth proportional to 99,468.80, 149,284.80 and 98,691.20 is: 148,117.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,468.80 : 149,284.80 = 98,691.20 : x
  2. Step 2: Convert to fraction form
    99,468.80/149,284.80 = 98,691.20/x
  3. Step 3: Cross multiply
    99,468.80x = 149,284.80 × 98,691.20
  4. Step 4: Simplify right side
    99,468.80x = 14,733,096,053.76
  5. Step 5: Solve for x
    x = 14,733,096,053.76/99,468.80
  6. Step 6: Final answer
    x = 148,117.76

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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.