Home / 135,820.90-187,423.98-75,388.66

Finding the Fourth Proportional to 135,820.90, 187,423.98 and 75,388.66

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Solution

The fourth proportional to 135,820.90, 187,423.98 and 75,388.66 is: 104,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,820.90 : 187,423.98 = 75,388.66 : x
  2. Step 2: Convert to fraction form
    135,820.90/187,423.98 = 75,388.66/x
  3. Step 3: Cross multiply
    135,820.90x = 187,423.98 × 75,388.66
  4. Step 4: Simplify right side
    135,820.90x = 14,129,642,704.07
  5. Step 5: Solve for x
    x = 14,129,642,704.07/135,820.90
  6. Step 6: Final answer
    x = 104,031.43

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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.