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Finding the Fourth Proportional to 121,847.68, 182,769.60 and 38,740.48

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Solution

The fourth proportional to 121,847.68, 182,769.60 and 38,740.48 is: 58,110.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,847.68 : 182,769.60 = 38,740.48 : x
  2. Step 2: Convert to fraction form
    121,847.68/182,769.60 = 38,740.48/x
  3. Step 3: Cross multiply
    121,847.68x = 182,769.60 × 38,740.48
  4. Step 4: Simplify right side
    121,847.68x = 7,080,582,033.41
  5. Step 5: Solve for x
    x = 7,080,582,033.41/121,847.68
  6. Step 6: Final answer
    x = 58,110.11

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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.