Home / 107,990.57-162,040.52-72,856.42

Finding the Fourth Proportional to 107,990.57, 162,040.52 and 72,856.42

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Solution

The fourth proportional to 107,990.57, 162,040.52 and 72,856.42 is: 109,321.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,990.57 : 162,040.52 = 72,856.42 : x
  2. Step 2: Convert to fraction form
    107,990.57/162,040.52 = 72,856.42/x
  3. Step 3: Cross multiply
    107,990.57x = 162,040.52 × 72,856.42
  4. Step 4: Simplify right side
    107,990.57x = 11,805,691,959.18
  5. Step 5: Solve for x
    x = 11,805,691,959.18/107,990.57
  6. Step 6: Final answer
    x = 109,321.51

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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.