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Finding the Fourth Proportional to 172,003.80, 258,005.70 and 92,287.65

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Solution

The fourth proportional to 172,003.80, 258,005.70 and 92,287.65 is: 138,431.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,003.80 : 258,005.70 = 92,287.65 : x
  2. Step 2: Convert to fraction form
    172,003.80/258,005.70 = 92,287.65/x
  3. Step 3: Cross multiply
    172,003.80x = 258,005.70 × 92,287.65
  4. Step 4: Simplify right side
    172,003.80x = 23,810,739,739.61
  5. Step 5: Solve for x
    x = 23,810,739,739.61/172,003.80
  6. Step 6: Final answer
    x = 138,431.48

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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.