Home / 134,738.19-185,951.85-100,687.55

Finding the Fourth Proportional to 134,738.19, 185,951.85 and 100,687.55

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Solution

The fourth proportional to 134,738.19, 185,951.85 and 100,687.55 is: 138,958.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,738.19 : 185,951.85 = 100,687.55 : x
  2. Step 2: Convert to fraction form
    134,738.19/185,951.85 = 100,687.55/x
  3. Step 3: Cross multiply
    134,738.19x = 185,951.85 × 100,687.55
  4. Step 4: Simplify right side
    134,738.19x = 18,723,036,194.47
  5. Step 5: Solve for x
    x = 18,723,036,194.47/134,738.19
  6. Step 6: Final answer
    x = 138,958.64

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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.