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Finding the Fourth Proportional to 168,949.92, 232,768.55 and 138,687.32

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Solution

The fourth proportional to 168,949.92, 232,768.55 and 138,687.32 is: 191,074.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,949.92 : 232,768.55 = 138,687.32 : x
  2. Step 2: Convert to fraction form
    168,949.92/232,768.55 = 138,687.32/x
  3. Step 3: Cross multiply
    168,949.92x = 232,768.55 × 138,687.32
  4. Step 4: Simplify right side
    168,949.92x = 32,282,044,522.51
  5. Step 5: Solve for x
    x = 32,282,044,522.51/168,949.92
  6. Step 6: Final answer
    x = 191,074.64

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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.