Home / 135,755.20-187,339.31-75,324.55

Finding the Fourth Proportional to 135,755.20, 187,339.31 and 75,324.55

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Solution

The fourth proportional to 135,755.20, 187,339.31 and 75,324.55 is: 103,946.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,755.20 : 187,339.31 = 75,324.55 : x
  2. Step 2: Convert to fraction form
    135,755.20/187,339.31 = 75,324.55/x
  3. Step 3: Cross multiply
    135,755.20x = 187,339.31 × 75,324.55
  4. Step 4: Simplify right side
    135,755.20x = 14,111,247,909.74
  5. Step 5: Solve for x
    x = 14,111,247,909.74/135,755.20
  6. Step 6: Final answer
    x = 103,946.28

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1.5x scale

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.