Home / 99,727.92-149,591.88-78,966

Finding the Fourth Proportional to 99,727.92, 149,591.88 and 78,966

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Solution

The fourth proportional to 99,727.92, 149,591.88 and 78,966 is: 118,449

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,727.92 : 149,591.88 = 78,966 : x
  2. Step 2: Convert to fraction form
    99,727.92/149,591.88 = 78,966/x
  3. Step 3: Cross multiply
    99,727.92x = 149,591.88 × 78,966
  4. Step 4: Simplify right side
    99,727.92x = 11,812,672,396.08
  5. Step 5: Solve for x
    x = 11,812,672,396.08/99,727.92
  6. Step 6: Final answer
    x = 118,449

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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.