Home / 131,122.40-180,977.57-83,366.42

Finding the Fourth Proportional to 131,122.40, 180,977.57 and 83,366.42

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Solution

The fourth proportional to 131,122.40, 180,977.57 and 83,366.42 is: 115,063.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,122.40 : 180,977.57 = 83,366.42 : x
  2. Step 2: Convert to fraction form
    131,122.40/180,977.57 = 83,366.42/x
  3. Step 3: Cross multiply
    131,122.40x = 180,977.57 × 83,366.42
  4. Step 4: Simplify right side
    131,122.40x = 15,087,450,789.48
  5. Step 5: Solve for x
    x = 15,087,450,789.48/131,122.40
  6. Step 6: Final answer
    x = 115,063.87

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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.