Home / 99,864.72-137,812.60-54,542.70

Finding the Fourth Proportional to 99,864.72, 137,812.60 and 54,542.70

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Solution

The fourth proportional to 99,864.72, 137,812.60 and 54,542.70 is: 75,268.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,864.72 : 137,812.60 = 54,542.70 : x
  2. Step 2: Convert to fraction form
    99,864.72/137,812.60 = 54,542.70/x
  3. Step 3: Cross multiply
    99,864.72x = 137,812.60 × 54,542.70
  4. Step 4: Simplify right side
    99,864.72x = 7,516,671,298.02
  5. Step 5: Solve for x
    x = 7,516,671,298.02/99,864.72
  6. Step 6: Final answer
    x = 75,268.54

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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.