Home / 135,047.26-186,339.70-81,335.75

Finding the Fourth Proportional to 135,047.26, 186,339.70 and 81,335.75

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Solution

The fourth proportional to 135,047.26, 186,339.70 and 81,335.75 is: 112,227.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,047.26 : 186,339.70 = 81,335.75 : x
  2. Step 2: Convert to fraction form
    135,047.26/186,339.70 = 81,335.75/x
  3. Step 3: Cross multiply
    135,047.26x = 186,339.70 × 81,335.75
  4. Step 4: Simplify right side
    135,047.26x = 15,156,079,254.28
  5. Step 5: Solve for x
    x = 15,156,079,254.28/135,047.26
  6. Step 6: Final answer
    x = 112,227.97

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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.