Home / 141,489.78-195,256.35-77,831.61

Finding the Fourth Proportional to 141,489.78, 195,256.35 and 77,831.61

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Solution

The fourth proportional to 141,489.78, 195,256.35 and 77,831.61 is: 107,407.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,489.78 : 195,256.35 = 77,831.61 : x
  2. Step 2: Convert to fraction form
    141,489.78/195,256.35 = 77,831.61/x
  3. Step 3: Cross multiply
    141,489.78x = 195,256.35 × 77,831.61
  4. Step 4: Simplify right side
    141,489.78x = 15,197,116,083.22
  5. Step 5: Solve for x
    x = 15,197,116,083.22/141,489.78
  6. Step 6: Final answer
    x = 107,407.87

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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.