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Finding the Fourth Proportional to 120,179.20, 180,268.80 and 101,152.30

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Solution

The fourth proportional to 120,179.20, 180,268.80 and 101,152.30 is: 151,728.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,179.20 : 180,268.80 = 101,152.30 : x
  2. Step 2: Convert to fraction form
    120,179.20/180,268.80 = 101,152.30/x
  3. Step 3: Cross multiply
    120,179.20x = 180,268.80 × 101,152.30
  4. Step 4: Simplify right side
    120,179.20x = 18,234,603,738.24
  5. Step 5: Solve for x
    x = 18,234,603,738.24/120,179.20
  6. Step 6: Final answer
    x = 151,728.45

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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.