Home / 120,139.20-179,625.60-88,646.40

Finding the Fourth Proportional to 120,139.20, 179,625.60 and 88,646.40

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Solution

The fourth proportional to 120,139.20, 179,625.60 and 88,646.40 is: 132,539.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,139.20 : 179,625.60 = 88,646.40 : x
  2. Step 2: Convert to fraction form
    120,139.20/179,625.60 = 88,646.40/x
  3. Step 3: Cross multiply
    120,139.20x = 179,625.60 × 88,646.40
  4. Step 4: Simplify right side
    120,139.20x = 15,923,162,787.84
  5. Step 5: Solve for x
    x = 15,923,162,787.84/120,139.20
  6. Step 6: Final answer
    x = 132,539.28

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1.5x scale

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.