Home / 135,291.72-202,642.32-82,541.28

Finding the Fourth Proportional to 135,291.72, 202,642.32 and 82,541.28

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Solution

The fourth proportional to 135,291.72, 202,642.32 and 82,541.28 is: 123,631.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,291.72 : 202,642.32 = 82,541.28 : x
  2. Step 2: Convert to fraction form
    135,291.72/202,642.32 = 82,541.28/x
  3. Step 3: Cross multiply
    135,291.72x = 202,642.32 × 82,541.28
  4. Step 4: Simplify right side
    135,291.72x = 16,726,356,474.97
  5. Step 5: Solve for x
    x = 16,726,356,474.97/135,291.72
  6. Step 6: Final answer
    x = 123,631.78

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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.