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Finding the Fourth Proportional to 99,260.38, 136,979.34 and 54,548.38

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Solution

The fourth proportional to 99,260.38, 136,979.34 and 54,548.38 is: 75,276.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,260.38 : 136,979.34 = 54,548.38 : x
  2. Step 2: Convert to fraction form
    99,260.38/136,979.34 = 54,548.38/x
  3. Step 3: Cross multiply
    99,260.38x = 136,979.34 × 54,548.38
  4. Step 4: Simplify right side
    99,260.38x = 7,472,000,405.57
  5. Step 5: Solve for x
    x = 7,472,000,405.57/99,260.38
  6. Step 6: Final answer
    x = 75,276.77

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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.