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Finding the Fourth Proportional to 181,366.80, 271,920.60 and 81,445.20

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Solution

The fourth proportional to 181,366.80, 271,920.60 and 81,445.20 is: 122,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,366.80 : 271,920.60 = 81,445.20 : x
  2. Step 2: Convert to fraction form
    181,366.80/271,920.60 = 81,445.20/x
  3. Step 3: Cross multiply
    181,366.80x = 271,920.60 × 81,445.20
  4. Step 4: Simplify right side
    181,366.80x = 22,146,627,651.12
  5. Step 5: Solve for x
    x = 22,146,627,651.12/181,366.80
  6. Step 6: Final answer
    x = 122,109.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.