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Finding the Fourth Proportional to 144,042.32, 198,778.11 and 80,376.32

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Solution

The fourth proportional to 144,042.32, 198,778.11 and 80,376.32 is: 110,919.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,042.32 : 198,778.11 = 80,376.32 : x
  2. Step 2: Convert to fraction form
    144,042.32/198,778.11 = 80,376.32/x
  3. Step 3: Cross multiply
    144,042.32x = 198,778.11 × 80,376.32
  4. Step 4: Simplify right side
    144,042.32x = 15,977,052,978.36
  5. Step 5: Solve for x
    x = 15,977,052,978.36/144,042.32
  6. Step 6: Final answer
    x = 110,919.16

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1.5x scale

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.