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Finding the Fourth Proportional to 121,147.32, 181,730.20 and 36,914.68

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Solution

The fourth proportional to 121,147.32, 181,730.20 and 36,914.68 is: 55,374.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,147.32 : 181,730.20 = 36,914.68 : x
  2. Step 2: Convert to fraction form
    121,147.32/181,730.20 = 36,914.68/x
  3. Step 3: Cross multiply
    121,147.32x = 181,730.20 × 36,914.68
  4. Step 4: Simplify right side
    121,147.32x = 6,708,512,179.34
  5. Step 5: Solve for x
    x = 6,708,512,179.34/121,147.32
  6. Step 6: Final answer
    x = 55,374.83

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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.