Home / 115,198.75-158,974.28-64,897.75

Finding the Fourth Proportional to 115,198.75, 158,974.28 and 64,897.75

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Solution

The fourth proportional to 115,198.75, 158,974.28 and 64,897.75 is: 89,558.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,198.75 : 158,974.28 = 64,897.75 : x
  2. Step 2: Convert to fraction form
    115,198.75/158,974.28 = 64,897.75/x
  3. Step 3: Cross multiply
    115,198.75x = 158,974.28 × 64,897.75
  4. Step 4: Simplify right side
    115,198.75x = 10,317,073,079.87
  5. Step 5: Solve for x
    x = 10,317,073,079.87/115,198.75
  6. Step 6: Final answer
    x = 89,558.90

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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.