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Finding the Fourth Proportional to 126,209.60, 189,153.60 and 67,073.60

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Solution

The fourth proportional to 126,209.60, 189,153.60 and 67,073.60 is: 100,524.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,209.60 : 189,153.60 = 67,073.60 : x
  2. Step 2: Convert to fraction form
    126,209.60/189,153.60 = 67,073.60/x
  3. Step 3: Cross multiply
    126,209.60x = 189,153.60 × 67,073.60
  4. Step 4: Simplify right side
    126,209.60x = 12,687,212,904.96
  5. Step 5: Solve for x
    x = 12,687,212,904.96/126,209.60
  6. Step 6: Final answer
    x = 100,524.94

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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.