Home / 135,819.90-187,422.60-75,387.66

Finding the Fourth Proportional to 135,819.90, 187,422.60 and 75,387.66

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Solution

The fourth proportional to 135,819.90, 187,422.60 and 75,387.66 is: 104,030.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,819.90 : 187,422.60 = 75,387.66 : x
  2. Step 2: Convert to fraction form
    135,819.90/187,422.60 = 75,387.66/x
  3. Step 3: Cross multiply
    135,819.90x = 187,422.60 × 75,387.66
  4. Step 4: Simplify right side
    135,819.90x = 14,129,351,245.12
  5. Step 5: Solve for x
    x = 14,129,351,245.12/135,819.90
  6. Step 6: Final answer
    x = 104,030.05

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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.