Home / 131,818.16-181,908.15-71,387.42

Finding the Fourth Proportional to 131,818.16, 181,908.15 and 71,387.42

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Solution

The fourth proportional to 131,818.16, 181,908.15 and 71,387.42 is: 98,514.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,818.16 : 181,908.15 = 71,387.42 : x
  2. Step 2: Convert to fraction form
    131,818.16/181,908.15 = 71,387.42/x
  3. Step 3: Cross multiply
    131,818.16x = 181,908.15 × 71,387.42
  4. Step 4: Simplify right side
    131,818.16x = 12,985,953,960.24
  5. Step 5: Solve for x
    x = 12,985,953,960.24/131,818.16
  6. Step 6: Final answer
    x = 98,514.15

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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.