Home / 141,831.14-195,726.38-78,168.92

Finding the Fourth Proportional to 141,831.14, 195,726.38 and 78,168.92

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Solution

The fourth proportional to 141,831.14, 195,726.38 and 78,168.92 is: 107,872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,831.14 : 195,726.38 = 78,168.92 : x
  2. Step 2: Convert to fraction form
    141,831.14/195,726.38 = 78,168.92/x
  3. Step 3: Cross multiply
    141,831.14x = 195,726.38 × 78,168.92
  4. Step 4: Simplify right side
    141,831.14x = 15,299,718,370.63
  5. Step 5: Solve for x
    x = 15,299,718,370.63/141,831.14
  6. Step 6: Final answer
    x = 107,872.78

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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.