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Finding the Fourth Proportional to 120,818.40, 181,251.90 and 101,232.60

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Solution

The fourth proportional to 120,818.40, 181,251.90 and 101,232.60 is: 151,869.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,818.40 : 181,251.90 = 101,232.60 : x
  2. Step 2: Convert to fraction form
    120,818.40/181,251.90 = 101,232.60/x
  3. Step 3: Cross multiply
    120,818.40x = 181,251.90 × 101,232.60
  4. Step 4: Simplify right side
    120,818.40x = 18,348,601,091.94
  5. Step 5: Solve for x
    x = 18,348,601,091.94/120,818.40
  6. Step 6: Final answer
    x = 151,869.26

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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.