Home / 135,768.32-187,382.40-76,171.52

Finding the Fourth Proportional to 135,768.32, 187,382.40 and 76,171.52

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Solution

The fourth proportional to 135,768.32, 187,382.40 and 76,171.52 is: 105,129.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,768.32 : 187,382.40 = 76,171.52 : x
  2. Step 2: Convert to fraction form
    135,768.32/187,382.40 = 76,171.52/x
  3. Step 3: Cross multiply
    135,768.32x = 187,382.40 × 76,171.52
  4. Step 4: Simplify right side
    135,768.32x = 14,273,202,229.25
  5. Step 5: Solve for x
    x = 14,273,202,229.25/135,768.32
  6. Step 6: Final answer
    x = 105,129.11

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1.5x scale

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.