Home / 131,831.43-181,926.91-71,401.92

Finding the Fourth Proportional to 131,831.43, 181,926.91 and 71,401.92

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Solution

The fourth proportional to 131,831.43, 181,926.91 and 71,401.92 is: 98,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,831.43 : 181,926.91 = 71,401.92 : x
  2. Step 2: Convert to fraction form
    131,831.43/181,926.91 = 71,401.92/x
  3. Step 3: Cross multiply
    131,831.43x = 181,926.91 × 71,401.92
  4. Step 4: Simplify right side
    131,831.43x = 12,989,930,673.67
  5. Step 5: Solve for x
    x = 12,989,930,673.67/131,831.43
  6. Step 6: Final answer
    x = 98,534.40

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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.