Home / 138,934.29-191,704.08-81,576.10

Finding the Fourth Proportional to 138,934.29, 191,704.08 and 81,576.10

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Solution

The fourth proportional to 138,934.29, 191,704.08 and 81,576.10 is: 112,560.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,934.29 : 191,704.08 = 81,576.10 : x
  2. Step 2: Convert to fraction form
    138,934.29/191,704.08 = 81,576.10/x
  3. Step 3: Cross multiply
    138,934.29x = 191,704.08 × 81,576.10
  4. Step 4: Simplify right side
    138,934.29x = 15,638,471,200.49
  5. Step 5: Solve for x
    x = 15,638,471,200.49/138,934.29
  6. Step 6: Final answer
    x = 112,560.20

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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.