Home / 131,818.50-181,908.56-71,387.74

Finding the Fourth Proportional to 131,818.50, 181,908.56 and 71,387.74

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Solution

The fourth proportional to 131,818.50, 181,908.56 and 71,387.74 is: 98,514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,818.50 : 181,908.56 = 71,387.74 : x
  2. Step 2: Convert to fraction form
    131,818.50/181,908.56 = 71,387.74/x
  3. Step 3: Cross multiply
    131,818.50x = 181,908.56 × 71,387.74
  4. Step 4: Simplify right side
    131,818.50x = 12,986,040,708.75
  5. Step 5: Solve for x
    x = 12,986,040,708.75/131,818.50
  6. Step 6: Final answer
    x = 98,514.55

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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.