Home / 112,839.32-155,712.81-67,542.30

Finding the Fourth Proportional to 112,839.32, 155,712.81 and 67,542.30

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Solution

The fourth proportional to 112,839.32, 155,712.81 and 67,542.30 is: 93,205.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,839.32 : 155,712.81 = 67,542.30 : x
  2. Step 2: Convert to fraction form
    112,839.32/155,712.81 = 67,542.30/x
  3. Step 3: Cross multiply
    112,839.32x = 155,712.81 × 67,542.30
  4. Step 4: Simplify right side
    112,839.32x = 10,517,201,326.86
  5. Step 5: Solve for x
    x = 10,517,201,326.86/112,839.32
  6. Step 6: Final answer
    x = 93,205.11

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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.