Home / 154,257.24-231,121.80-84,185.76

Finding the Fourth Proportional to 154,257.24, 231,121.80 and 84,185.76

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Solution

The fourth proportional to 154,257.24, 231,121.80 and 84,185.76 is: 126,134.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,257.24 : 231,121.80 = 84,185.76 : x
  2. Step 2: Convert to fraction form
    154,257.24/231,121.80 = 84,185.76/x
  3. Step 3: Cross multiply
    154,257.24x = 231,121.80 × 84,185.76
  4. Step 4: Simplify right side
    154,257.24x = 19,457,164,385.57
  5. Step 5: Solve for x
    x = 19,457,164,385.57/154,257.24
  6. Step 6: Final answer
    x = 126,134.53

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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.