Home / 133,079.40-199,586.16-79,738.20

Finding the Fourth Proportional to 133,079.40, 199,586.16 and 79,738.20

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Solution

The fourth proportional to 133,079.40, 199,586.16 and 79,738.20 is: 119,587.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,079.40 : 199,586.16 = 79,738.20 : x
  2. Step 2: Convert to fraction form
    133,079.40/199,586.16 = 79,738.20/x
  3. Step 3: Cross multiply
    133,079.40x = 199,586.16 × 79,738.20
  4. Step 4: Simplify right side
    133,079.40x = 15,914,641,143.31
  5. Step 5: Solve for x
    x = 15,914,641,143.31/133,079.40
  6. Step 6: Final answer
    x = 119,587.56

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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.