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Finding the Fourth Proportional to 126,782.52, 174,960.18 and 68,639.88

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Solution

The fourth proportional to 126,782.52, 174,960.18 and 68,639.88 is: 94,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,782.52 : 174,960.18 = 68,639.88 : x
  2. Step 2: Convert to fraction form
    126,782.52/174,960.18 = 68,639.88/x
  3. Step 3: Cross multiply
    126,782.52x = 174,960.18 × 68,639.88
  4. Step 4: Simplify right side
    126,782.52x = 12,009,245,759.98
  5. Step 5: Solve for x
    x = 12,009,245,759.98/126,782.52
  6. Step 6: Final answer
    x = 94,723.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.