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Finding the Fourth Proportional to 120,988.56, 181,489.92 and 36,751.52

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Solution

The fourth proportional to 120,988.56, 181,489.92 and 36,751.52 is: 55,129.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,988.56 : 181,489.92 = 36,751.52 : x
  2. Step 2: Convert to fraction form
    120,988.56/181,489.92 = 36,751.52/x
  3. Step 3: Cross multiply
    120,988.56x = 181,489.92 × 36,751.52
  4. Step 4: Simplify right side
    120,988.56x = 6,670,030,424.68
  5. Step 5: Solve for x
    x = 6,670,030,424.68/120,988.56
  6. Step 6: Final answer
    x = 55,129.43

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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.