Home / 135,728.16-187,305.01-79,150.47

Finding the Fourth Proportional to 135,728.16, 187,305.01 and 79,150.47

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Solution

The fourth proportional to 135,728.16, 187,305.01 and 79,150.47 is: 109,227.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,728.16 : 187,305.01 = 79,150.47 : x
  2. Step 2: Convert to fraction form
    135,728.16/187,305.01 = 79,150.47/x
  3. Step 3: Cross multiply
    135,728.16x = 187,305.01 × 79,150.47
  4. Step 4: Simplify right side
    135,728.16x = 14,825,278,674.58
  5. Step 5: Solve for x
    x = 14,825,278,674.58/135,728.16
  6. Step 6: Final answer
    x = 109,227.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.