Home / 120,629.20-180,943.80-83,304.40

Finding the Fourth Proportional to 120,629.20, 180,943.80 and 83,304.40

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Solution

The fourth proportional to 120,629.20, 180,943.80 and 83,304.40 is: 124,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,629.20 : 180,943.80 = 83,304.40 : x
  2. Step 2: Convert to fraction form
    120,629.20/180,943.80 = 83,304.40/x
  3. Step 3: Cross multiply
    120,629.20x = 180,943.80 × 83,304.40
  4. Step 4: Simplify right side
    120,629.20x = 15,073,414,692.72
  5. Step 5: Solve for x
    x = 15,073,414,692.72/120,629.20
  6. Step 6: Final answer
    x = 124,956.60

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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.