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Finding the Fourth Proportional to 99,249.64, 136,972.90 and 54,546.92

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Solution

The fourth proportional to 99,249.64, 136,972.90 and 54,546.92 is: 75,279.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,249.64 : 136,972.90 = 54,546.92 : x
  2. Step 2: Convert to fraction form
    99,249.64/136,972.90 = 54,546.92/x
  3. Step 3: Cross multiply
    99,249.64x = 136,972.90 × 54,546.92
  4. Step 4: Simplify right side
    99,249.64x = 7,471,449,818.47
  5. Step 5: Solve for x
    x = 7,471,449,818.47/99,249.64
  6. Step 6: Final answer
    x = 75,279.36

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1.5x scale

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.