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Finding the Fourth Proportional to 127,050.80, 175,327.49 and 78,639.89

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Solution

The fourth proportional to 127,050.80, 175,327.49 and 78,639.89 is: 108,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,050.80 : 175,327.49 = 78,639.89 : x
  2. Step 2: Convert to fraction form
    127,050.80/175,327.49 = 78,639.89/x
  3. Step 3: Cross multiply
    127,050.80x = 175,327.49 × 78,639.89
  4. Step 4: Simplify right side
    127,050.80x = 13,787,734,527.58
  5. Step 5: Solve for x
    x = 13,787,734,527.58/127,050.80
  6. Step 6: Final answer
    x = 108,521.43

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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.