Home / 126,008.20-188,793.60-81,612.10

Finding the Fourth Proportional to 126,008.20, 188,793.60 and 81,612.10

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Solution

The fourth proportional to 126,008.20, 188,793.60 and 81,612.10 is: 122,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,008.20 : 188,793.60 = 81,612.10 : x
  2. Step 2: Convert to fraction form
    126,008.20/188,793.60 = 81,612.10/x
  3. Step 3: Cross multiply
    126,008.20x = 188,793.60 × 81,612.10
  4. Step 4: Simplify right side
    126,008.20x = 15,407,842,162.56
  5. Step 5: Solve for x
    x = 15,407,842,162.56/126,008.20
  6. Step 6: Final answer
    x = 122,276.50

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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.