Home / 112,731.25-155,568.84-61,744

Finding the Fourth Proportional to 112,731.25, 155,568.84 and 61,744

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Solution

The fourth proportional to 112,731.25, 155,568.84 and 61,744 is: 85,206.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,731.25 : 155,568.84 = 61,744 : x
  2. Step 2: Convert to fraction form
    112,731.25/155,568.84 = 61,744/x
  3. Step 3: Cross multiply
    112,731.25x = 155,568.84 × 61,744
  4. Step 4: Simplify right side
    112,731.25x = 9,605,442,456.96
  5. Step 5: Solve for x
    x = 9,605,442,456.96/112,731.25
  6. Step 6: Final answer
    x = 85,206.56

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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.