Home / 141,288.60-194,989.12-80,878.20

Finding the Fourth Proportional to 141,288.60, 194,989.12 and 80,878.20

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Solution

The fourth proportional to 141,288.60, 194,989.12 and 80,878.20 is: 111,618.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,288.60 : 194,989.12 = 80,878.20 : x
  2. Step 2: Convert to fraction form
    141,288.60/194,989.12 = 80,878.20/x
  3. Step 3: Cross multiply
    141,288.60x = 194,989.12 × 80,878.20
  4. Step 4: Simplify right side
    141,288.60x = 15,770,368,566.72
  5. Step 5: Solve for x
    x = 15,770,368,566.72/141,288.60
  6. Step 6: Final answer
    x = 111,618.12

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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.