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Finding the Fourth Proportional to 120,900.60, 181,350.90 and 119,734.20

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Solution

The fourth proportional to 120,900.60, 181,350.90 and 119,734.20 is: 179,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,900.60 : 181,350.90 = 119,734.20 : x
  2. Step 2: Convert to fraction form
    120,900.60/181,350.90 = 119,734.20/x
  3. Step 3: Cross multiply
    120,900.60x = 181,350.90 × 119,734.20
  4. Step 4: Simplify right side
    120,900.60x = 21,713,904,930.78
  5. Step 5: Solve for x
    x = 21,713,904,930.78/120,900.60
  6. Step 6: Final answer
    x = 179,601.30

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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.