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Finding the Fourth Proportional to 120,758.68, 181,079.76 and 50,619.16

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Solution

The fourth proportional to 120,758.68, 181,079.76 and 50,619.16 is: 75,904.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,758.68 : 181,079.76 = 50,619.16 : x
  2. Step 2: Convert to fraction form
    120,758.68/181,079.76 = 50,619.16/x
  3. Step 3: Cross multiply
    120,758.68x = 181,079.76 × 50,619.16
  4. Step 4: Simplify right side
    120,758.68x = 9,166,105,344.20
  5. Step 5: Solve for x
    x = 9,166,105,344.20/120,758.68
  6. Step 6: Final answer
    x = 75,904.32

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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.