Home / 155,857.20-215,085.24-88,787.76

Finding the Fourth Proportional to 155,857.20, 215,085.24 and 88,787.76

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Solution

The fourth proportional to 155,857.20, 215,085.24 and 88,787.76 is: 122,528.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,857.20 : 215,085.24 = 88,787.76 : x
  2. Step 2: Convert to fraction form
    155,857.20/215,085.24 = 88,787.76/x
  3. Step 3: Cross multiply
    155,857.20x = 215,085.24 × 88,787.76
  4. Step 4: Simplify right side
    155,857.20x = 19,096,936,668.66
  5. Step 5: Solve for x
    x = 19,096,936,668.66/155,857.20
  6. Step 6: Final answer
    x = 122,528.42

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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.