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Finding the Fourth Proportional to 120,937.40, 181,434.90 and 50,780.60

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Solution

The fourth proportional to 120,937.40, 181,434.90 and 50,780.60 is: 76,182.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,937.40 : 181,434.90 = 50,780.60 : x
  2. Step 2: Convert to fraction form
    120,937.40/181,434.90 = 50,780.60/x
  3. Step 3: Cross multiply
    120,937.40x = 181,434.90 × 50,780.60
  4. Step 4: Simplify right side
    120,937.40x = 9,213,373,082.94
  5. Step 5: Solve for x
    x = 9,213,373,082.94/120,937.40
  6. Step 6: Final answer
    x = 76,182.99

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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.