Home / 135,135.52-186,503.24-78,546.90

Finding the Fourth Proportional to 135,135.52, 186,503.24 and 78,546.90

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Solution

The fourth proportional to 135,135.52, 186,503.24 and 78,546.90 is: 108,404.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,135.52 : 186,503.24 = 78,546.90 : x
  2. Step 2: Convert to fraction form
    135,135.52/186,503.24 = 78,546.90/x
  3. Step 3: Cross multiply
    135,135.52x = 186,503.24 × 78,546.90
  4. Step 4: Simplify right side
    135,135.52x = 14,649,251,341.96
  5. Step 5: Solve for x
    x = 14,649,251,341.96/135,135.52
  6. Step 6: Final answer
    x = 108,404.15

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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.