Home / 101,443.92-139,976.28-63,769.20

Finding the Fourth Proportional to 101,443.92, 139,976.28 and 63,769.20

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Solution

The fourth proportional to 101,443.92, 139,976.28 and 63,769.20 is: 87,991.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,443.92 : 139,976.28 = 63,769.20 : x
  2. Step 2: Convert to fraction form
    101,443.92/139,976.28 = 63,769.20/x
  3. Step 3: Cross multiply
    101,443.92x = 139,976.28 × 63,769.20
  4. Step 4: Simplify right side
    101,443.92x = 8,926,175,394.58
  5. Step 5: Solve for x
    x = 8,926,175,394.58/101,443.92
  6. Step 6: Final answer
    x = 87,991.23

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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.