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Finding the Fourth Proportional to 121,399.48, 167,502.42 and 73,651.60

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Solution

The fourth proportional to 121,399.48, 167,502.42 and 73,651.60 is: 101,621.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,399.48 : 167,502.42 = 73,651.60 : x
  2. Step 2: Convert to fraction form
    121,399.48/167,502.42 = 73,651.60/x
  3. Step 3: Cross multiply
    121,399.48x = 167,502.42 × 73,651.60
  4. Step 4: Simplify right side
    121,399.48x = 12,336,821,236.87
  5. Step 5: Solve for x
    x = 12,336,821,236.87/121,399.48
  6. Step 6: Final answer
    x = 101,621.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.