Home / 87,158.60-120,237-55,271.96

Finding the Fourth Proportional to 87,158.60, 120,237 and 55,271.96

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Solution

The fourth proportional to 87,158.60, 120,237 and 55,271.96 is: 76,248.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,158.60 : 120,237 = 55,271.96 : x
  2. Step 2: Convert to fraction form
    87,158.60/120,237 = 55,271.96/x
  3. Step 3: Cross multiply
    87,158.60x = 120,237 × 55,271.96
  4. Step 4: Simplify right side
    87,158.60x = 6,645,734,654.52
  5. Step 5: Solve for x
    x = 6,645,734,654.52/87,158.60
  6. Step 6: Final answer
    x = 76,248.75

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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.