Home / 215,974.60-323,961.90-103,635.70

Finding the Fourth Proportional to 215,974.60, 323,961.90 and 103,635.70

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Solution

The fourth proportional to 215,974.60, 323,961.90 and 103,635.70 is: 155,453.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,974.60 : 323,961.90 = 103,635.70 : x
  2. Step 2: Convert to fraction form
    215,974.60/323,961.90 = 103,635.70/x
  3. Step 3: Cross multiply
    215,974.60x = 323,961.90 × 103,635.70
  4. Step 4: Simplify right side
    215,974.60x = 33,574,018,279.83
  5. Step 5: Solve for x
    x = 33,574,018,279.83/215,974.60
  6. Step 6: Final answer
    x = 155,453.55

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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.