Home / 131,818.42-181,908.50-71,387.68

Finding the Fourth Proportional to 131,818.42, 181,908.50 and 71,387.68

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Solution

The fourth proportional to 131,818.42, 181,908.50 and 71,387.68 is: 98,514.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,818.42 : 181,908.50 = 71,387.68 : x
  2. Step 2: Convert to fraction form
    131,818.42/181,908.50 = 71,387.68/x
  3. Step 3: Cross multiply
    131,818.42x = 181,908.50 × 71,387.68
  4. Step 4: Simplify right side
    131,818.42x = 12,986,024,520.80
  5. Step 5: Solve for x
    x = 12,986,024,520.80/131,818.42
  6. Step 6: Final answer
    x = 98,514.49

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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.