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Finding the Fourth Proportional to 99,182.70, 136,871.96 and 54,470.70

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Solution

The fourth proportional to 99,182.70, 136,871.96 and 54,470.70 is: 75,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,182.70 : 136,871.96 = 54,470.70 : x
  2. Step 2: Convert to fraction form
    99,182.70/136,871.96 = 54,470.70/x
  3. Step 3: Cross multiply
    99,182.70x = 136,871.96 × 54,470.70
  4. Step 4: Simplify right side
    99,182.70x = 7,455,511,471.57
  5. Step 5: Solve for x
    x = 7,455,511,471.57/99,182.70
  6. Step 6: Final answer
    x = 75,169.47

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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.