Home / 109,321.19-163,809.07-82,540.43

Finding the Fourth Proportional to 109,321.19, 163,809.07 and 82,540.43

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Solution

The fourth proportional to 109,321.19, 163,809.07 and 82,540.43 is: 123,680.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,321.19 : 163,809.07 = 82,540.43 : x
  2. Step 2: Convert to fraction form
    109,321.19/163,809.07 = 82,540.43/x
  3. Step 3: Cross multiply
    109,321.19x = 163,809.07 × 82,540.43
  4. Step 4: Simplify right side
    109,321.19x = 13,520,871,075.70
  5. Step 5: Solve for x
    x = 13,520,871,075.70/109,321.19
  6. Step 6: Final answer
    x = 123,680.24

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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.