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Finding the Fourth Proportional to 168,395.48, 252,612.54 and 78,391.52

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Solution

The fourth proportional to 168,395.48, 252,612.54 and 78,391.52 is: 117,596.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,395.48 : 252,612.54 = 78,391.52 : x
  2. Step 2: Convert to fraction form
    168,395.48/252,612.54 = 78,391.52/x
  3. Step 3: Cross multiply
    168,395.48x = 252,612.54 × 78,391.52
  4. Step 4: Simplify right side
    168,395.48x = 19,802,680,981.66
  5. Step 5: Solve for x
    x = 19,802,680,981.66/168,395.48
  6. Step 6: Final answer
    x = 117,596.27

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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.