Home / 135,821.18-187,424.34-75,388.88

Finding the Fourth Proportional to 135,821.18, 187,424.34 and 75,388.88

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Solution

The fourth proportional to 135,821.18, 187,424.34 and 75,388.88 is: 104,031.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,821.18 : 187,424.34 = 75,388.88 : x
  2. Step 2: Convert to fraction form
    135,821.18/187,424.34 = 75,388.88/x
  3. Step 3: Cross multiply
    135,821.18x = 187,424.34 × 75,388.88
  4. Step 4: Simplify right side
    135,821.18x = 14,129,711,077.34
  5. Step 5: Solve for x
    x = 14,129,711,077.34/135,821.18
  6. Step 6: Final answer
    x = 104,031.72

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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.