Home / 112,979.71-155,770.14-82,712.48

Finding the Fourth Proportional to 112,979.71, 155,770.14 and 82,712.48

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Solution

The fourth proportional to 112,979.71, 155,770.14 and 82,712.48 is: 114,039.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,979.71 : 155,770.14 = 82,712.48 : x
  2. Step 2: Convert to fraction form
    112,979.71/155,770.14 = 82,712.48/x
  3. Step 3: Cross multiply
    112,979.71x = 155,770.14 × 82,712.48
  4. Step 4: Simplify right side
    112,979.71x = 12,884,134,589.35
  5. Step 5: Solve for x
    x = 12,884,134,589.35/112,979.71
  6. Step 6: Final answer
    x = 114,039.37

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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.