Home / 141,831.90-195,729.21-78,169.86

Finding the Fourth Proportional to 141,831.90, 195,729.21 and 78,169.86

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Solution

The fourth proportional to 141,831.90, 195,729.21 and 78,169.86 is: 107,875.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,831.90 : 195,729.21 = 78,169.86 : x
  2. Step 2: Convert to fraction form
    141,831.90/195,729.21 = 78,169.86/x
  3. Step 3: Cross multiply
    141,831.90x = 195,729.21 × 78,169.86
  4. Step 4: Simplify right side
    141,831.90x = 15,300,124,943.61
  5. Step 5: Solve for x
    x = 15,300,124,943.61/141,831.90
  6. Step 6: Final answer
    x = 107,875.06

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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.