Home / 126,411.60-189,520.20-71,007.60

Finding the Fourth Proportional to 126,411.60, 189,520.20 and 71,007.60

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Solution

The fourth proportional to 126,411.60, 189,520.20 and 71,007.60 is: 106,456.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,411.60 : 189,520.20 = 71,007.60 : x
  2. Step 2: Convert to fraction form
    126,411.60/189,520.20 = 71,007.60/x
  3. Step 3: Cross multiply
    126,411.60x = 189,520.20 × 71,007.60
  4. Step 4: Simplify right side
    126,411.60x = 13,457,374,553.52
  5. Step 5: Solve for x
    x = 13,457,374,553.52/126,411.60
  6. Step 6: Final answer
    x = 106,456.80

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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.