Home / 99,151.14-148,781.28-42,991.68

Finding the Fourth Proportional to 99,151.14, 148,781.28 and 42,991.68

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Solution

The fourth proportional to 99,151.14, 148,781.28 and 42,991.68 is: 64,511.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,151.14 : 148,781.28 = 42,991.68 : x
  2. Step 2: Convert to fraction form
    99,151.14/148,781.28 = 42,991.68/x
  3. Step 3: Cross multiply
    99,151.14x = 148,781.28 × 42,991.68
  4. Step 4: Simplify right side
    99,151.14x = 6,396,357,179.75
  5. Step 5: Solve for x
    x = 6,396,357,179.75/99,151.14
  6. Step 6: Final answer
    x = 64,511.18

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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.