Home / 155,939.18-215,195.94-84,318.57

Finding the Fourth Proportional to 155,939.18, 215,195.94 and 84,318.57

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Solution

The fourth proportional to 155,939.18, 215,195.94 and 84,318.57 is: 116,359.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,939.18 : 215,195.94 = 84,318.57 : x
  2. Step 2: Convert to fraction form
    155,939.18/215,195.94 = 84,318.57/x
  3. Step 3: Cross multiply
    155,939.18x = 215,195.94 × 84,318.57
  4. Step 4: Simplify right side
    155,939.18x = 18,145,013,930.61
  5. Step 5: Solve for x
    x = 18,145,013,930.61/155,939.18
  6. Step 6: Final answer
    x = 116,359.56

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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.