Home / 158,382.72-218,568.84-86,761.20

Finding the Fourth Proportional to 158,382.72, 218,568.84 and 86,761.20

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Solution

The fourth proportional to 158,382.72, 218,568.84 and 86,761.20 is: 119,730.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,382.72 : 218,568.84 = 86,761.20 : x
  2. Step 2: Convert to fraction form
    158,382.72/218,568.84 = 86,761.20/x
  3. Step 3: Cross multiply
    158,382.72x = 218,568.84 × 86,761.20
  4. Step 4: Simplify right side
    158,382.72x = 18,963,294,841.01
  5. Step 5: Solve for x
    x = 18,963,294,841.01/158,382.72
  6. Step 6: Final answer
    x = 119,730.83

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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.