Home / 100,331.04-138,456.84-55,619.04

Finding the Fourth Proportional to 100,331.04, 138,456.84 and 55,619.04

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Solution

The fourth proportional to 100,331.04, 138,456.84 and 55,619.04 is: 76,754.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,331.04 : 138,456.84 = 55,619.04 : x
  2. Step 2: Convert to fraction form
    100,331.04/138,456.84 = 55,619.04/x
  3. Step 3: Cross multiply
    100,331.04x = 138,456.84 × 55,619.04
  4. Step 4: Simplify right side
    100,331.04x = 7,700,836,522.23
  5. Step 5: Solve for x
    x = 7,700,836,522.23/100,331.04
  6. Step 6: Final answer
    x = 76,754.28

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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.