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Finding the Fourth Proportional to 168,115.65, 252,173.48 and 128,749.65

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Solution

The fourth proportional to 168,115.65, 252,173.48 and 128,749.65 is: 193,124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,115.65 : 252,173.48 = 128,749.65 : x
  2. Step 2: Convert to fraction form
    168,115.65/252,173.48 = 128,749.65/x
  3. Step 3: Cross multiply
    168,115.65x = 252,173.48 × 128,749.65
  4. Step 4: Simplify right side
    168,115.65x = 32,467,246,645.53
  5. Step 5: Solve for x
    x = 32,467,246,645.53/168,115.65
  6. Step 6: Final answer
    x = 193,124.48

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1.5x scale

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.