Home / 127,115.76-175,376.30-72,628.83

Finding the Fourth Proportional to 127,115.76, 175,376.30 and 72,628.83

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Solution

The fourth proportional to 127,115.76, 175,376.30 and 72,628.83 is: 100,202.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,115.76 : 175,376.30 = 72,628.83 : x
  2. Step 2: Convert to fraction form
    127,115.76/175,376.30 = 72,628.83/x
  3. Step 3: Cross multiply
    127,115.76x = 175,376.30 × 72,628.83
  4. Step 4: Simplify right side
    127,115.76x = 12,737,375,478.73
  5. Step 5: Solve for x
    x = 12,737,375,478.73/127,115.76
  6. Step 6: Final answer
    x = 100,202.96

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1.5x scale

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.