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Finding the Fourth Proportional to 99,164.80, 136,790.20 and 63,314.52

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Solution

The fourth proportional to 99,164.80, 136,790.20 and 63,314.52 is: 87,337.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,164.80 : 136,790.20 = 63,314.52 : x
  2. Step 2: Convert to fraction form
    99,164.80/136,790.20 = 63,314.52/x
  3. Step 3: Cross multiply
    99,164.80x = 136,790.20 × 63,314.52
  4. Step 4: Simplify right side
    99,164.80x = 8,660,805,853.70
  5. Step 5: Solve for x
    x = 8,660,805,853.70/99,164.80
  6. Step 6: Final answer
    x = 87,337.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.