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Finding the Fourth Proportional to 168,378.35, 232,392.23 and 100,399.70

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Solution

The fourth proportional to 168,378.35, 232,392.23 and 100,399.70 is: 138,569.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,378.35 : 232,392.23 = 100,399.70 : x
  2. Step 2: Convert to fraction form
    168,378.35/232,392.23 = 100,399.70/x
  3. Step 3: Cross multiply
    168,378.35x = 232,392.23 × 100,399.70
  4. Step 4: Simplify right side
    168,378.35x = 23,332,109,672.33
  5. Step 5: Solve for x
    x = 23,332,109,672.33/168,378.35
  6. Step 6: Final answer
    x = 138,569.54

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1.5x scale

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.