Home / 154,077.20-231,115.80-71,133.20

Finding the Fourth Proportional to 154,077.20, 231,115.80 and 71,133.20

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Solution

The fourth proportional to 154,077.20, 231,115.80 and 71,133.20 is: 106,699.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,077.20 : 231,115.80 = 71,133.20 : x
  2. Step 2: Convert to fraction form
    154,077.20/231,115.80 = 71,133.20/x
  3. Step 3: Cross multiply
    154,077.20x = 231,115.80 × 71,133.20
  4. Step 4: Simplify right side
    154,077.20x = 16,440,006,424.56
  5. Step 5: Solve for x
    x = 16,440,006,424.56/154,077.20
  6. Step 6: Final answer
    x = 106,699.80

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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.