Home / 127,138.20-175,474.92-84,118.56

Finding the Fourth Proportional to 127,138.20, 175,474.92 and 84,118.56

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Solution

The fourth proportional to 127,138.20, 175,474.92 and 84,118.56 is: 116,099.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,138.20 : 175,474.92 = 84,118.56 : x
  2. Step 2: Convert to fraction form
    127,138.20/175,474.92 = 84,118.56/x
  3. Step 3: Cross multiply
    127,138.20x = 175,474.92 × 84,118.56
  4. Step 4: Simplify right side
    127,138.20x = 14,760,697,586.52
  5. Step 5: Solve for x
    x = 14,760,697,586.52/127,138.20
  6. Step 6: Final answer
    x = 116,099.63

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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.