Home / 103,758.32-155,490.24-79,976

Finding the Fourth Proportional to 103,758.32, 155,490.24 and 79,976

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Solution

The fourth proportional to 103,758.32, 155,490.24 and 79,976 is: 119,850.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,758.32 : 155,490.24 = 79,976 : x
  2. Step 2: Convert to fraction form
    103,758.32/155,490.24 = 79,976/x
  3. Step 3: Cross multiply
    103,758.32x = 155,490.24 × 79,976
  4. Step 4: Simplify right side
    103,758.32x = 12,435,487,434.24
  5. Step 5: Solve for x
    x = 12,435,487,434.24/103,758.32
  6. Step 6: Final answer
    x = 119,850.51

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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.