Home / 99,572.20-137,410.85-57,134.68

Finding the Fourth Proportional to 99,572.20, 137,410.85 and 57,134.68

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Solution

The fourth proportional to 99,572.20, 137,410.85 and 57,134.68 is: 78,846.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,572.20 : 137,410.85 = 57,134.68 : x
  2. Step 2: Convert to fraction form
    99,572.20/137,410.85 = 57,134.68/x
  3. Step 3: Cross multiply
    99,572.20x = 137,410.85 × 57,134.68
  4. Step 4: Simplify right side
    99,572.20x = 7,850,924,943.28
  5. Step 5: Solve for x
    x = 7,850,924,943.28/99,572.20
  6. Step 6: Final answer
    x = 78,846.55

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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.