Home / 141,728.28-195,585.56-78,065.92

Finding the Fourth Proportional to 141,728.28, 195,585.56 and 78,065.92

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Solution

The fourth proportional to 141,728.28, 195,585.56 and 78,065.92 is: 107,731.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,728.28 : 195,585.56 = 78,065.92 : x
  2. Step 2: Convert to fraction form
    141,728.28/195,585.56 = 78,065.92/x
  3. Step 3: Cross multiply
    141,728.28x = 195,585.56 × 78,065.92
  4. Step 4: Simplify right side
    141,728.28x = 15,268,566,680.12
  5. Step 5: Solve for x
    x = 15,268,566,680.12/141,728.28
  6. Step 6: Final answer
    x = 107,731.26

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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.