Home / 105,721.17-158,251.27-68,231.13

Finding the Fourth Proportional to 105,721.17, 158,251.27 and 68,231.13

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Solution

The fourth proportional to 105,721.17, 158,251.27 and 68,231.13 is: 102,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,721.17 : 158,251.27 = 68,231.13 : x
  2. Step 2: Convert to fraction form
    105,721.17/158,251.27 = 68,231.13/x
  3. Step 3: Cross multiply
    105,721.17x = 158,251.27 × 68,231.13
  4. Step 4: Simplify right side
    105,721.17x = 10,797,662,976.04
  5. Step 5: Solve for x
    x = 10,797,662,976.04/105,721.17
  6. Step 6: Final answer
    x = 102,133.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.