Home / 99,557.20-137,388.87-54,845.20

Finding the Fourth Proportional to 99,557.20, 137,388.87 and 54,845.20

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Solution

The fourth proportional to 99,557.20, 137,388.87 and 54,845.20 is: 75,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,557.20 : 137,388.87 = 54,845.20 : x
  2. Step 2: Convert to fraction form
    99,557.20/137,388.87 = 54,845.20/x
  3. Step 3: Cross multiply
    99,557.20x = 137,388.87 × 54,845.20
  4. Step 4: Simplify right side
    99,557.20x = 7,535,120,052.92
  5. Step 5: Solve for x
    x = 7,535,120,052.92/99,557.20
  6. Step 6: Final answer
    x = 75,686.34

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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.