Home / 126,049.25-189,073.20-72,706.66

Finding the Fourth Proportional to 126,049.25, 189,073.20 and 72,706.66

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Solution

The fourth proportional to 126,049.25, 189,073.20 and 72,706.66 is: 109,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,049.25 : 189,073.20 = 72,706.66 : x
  2. Step 2: Convert to fraction form
    126,049.25/189,073.20 = 72,706.66/x
  3. Step 3: Cross multiply
    126,049.25x = 189,073.20 × 72,706.66
  4. Step 4: Simplify right side
    126,049.25x = 13,746,880,394.83
  5. Step 5: Solve for x
    x = 13,746,880,394.83/126,049.25
  6. Step 6: Final answer
    x = 109,059.59

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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.