Home / 131,781.72-181,860.24-71,353.68

Finding the Fourth Proportional to 131,781.72, 181,860.24 and 71,353.68

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Solution

The fourth proportional to 131,781.72, 181,860.24 and 71,353.68 is: 98,468.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,781.72 : 181,860.24 = 71,353.68 : x
  2. Step 2: Convert to fraction form
    131,781.72/181,860.24 = 71,353.68/x
  3. Step 3: Cross multiply
    131,781.72x = 181,860.24 × 71,353.68
  4. Step 4: Simplify right side
    131,781.72x = 12,976,397,369.68
  5. Step 5: Solve for x
    x = 12,976,397,369.68/131,781.72
  6. Step 6: Final answer
    x = 98,468.87

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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.