Home / 135,229.44-186,632.28-81,541.92

Finding the Fourth Proportional to 135,229.44, 186,632.28 and 81,541.92

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Solution

The fourth proportional to 135,229.44, 186,632.28 and 81,541.92 is: 112,537.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,229.44 : 186,632.28 = 81,541.92 : x
  2. Step 2: Convert to fraction form
    135,229.44/186,632.28 = 81,541.92/x
  3. Step 3: Cross multiply
    135,229.44x = 186,632.28 × 81,541.92
  4. Step 4: Simplify right side
    135,229.44x = 15,218,354,445.18
  5. Step 5: Solve for x
    x = 15,218,354,445.18/135,229.44
  6. Step 6: Final answer
    x = 112,537.29

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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.