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Finding the Fourth Proportional to 172,301.30, 258,346.11 and 66,997.52

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Solution

The fourth proportional to 172,301.30, 258,346.11 and 66,997.52 is: 100,455.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,301.30 : 258,346.11 = 66,997.52 : x
  2. Step 2: Convert to fraction form
    172,301.30/258,346.11 = 66,997.52/x
  3. Step 3: Cross multiply
    172,301.30x = 258,346.11 × 66,997.52
  4. Step 4: Simplify right side
    172,301.30x = 17,308,548,671.65
  5. Step 5: Solve for x
    x = 17,308,548,671.65/172,301.30
  6. Step 6: Final answer
    x = 100,455.13

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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.