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Finding the Fourth Proportional to 168,480.48, 252,719.70 and 42,120.12

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Solution

The fourth proportional to 168,480.48, 252,719.70 and 42,120.12 is: 63,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,480.48 : 252,719.70 = 42,120.12 : x
  2. Step 2: Convert to fraction form
    168,480.48/252,719.70 = 42,120.12/x
  3. Step 3: Cross multiply
    168,480.48x = 252,719.70 × 42,120.12
  4. Step 4: Simplify right side
    168,480.48x = 10,644,584,090.36
  5. Step 5: Solve for x
    x = 10,644,584,090.36/168,480.48
  6. Step 6: Final answer
    x = 63,179.93

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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.