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Finding the Fourth Proportional to 172,514.80, 258,618.30 and 67,309.30

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Solution

The fourth proportional to 172,514.80, 258,618.30 and 67,309.30 is: 100,903.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,514.80 : 258,618.30 = 67,309.30 : x
  2. Step 2: Convert to fraction form
    172,514.80/258,618.30 = 67,309.30/x
  3. Step 3: Cross multiply
    172,514.80x = 258,618.30 × 67,309.30
  4. Step 4: Simplify right side
    172,514.80x = 17,407,416,740.19
  5. Step 5: Solve for x
    x = 17,407,416,740.19/172,514.80
  6. Step 6: Final answer
    x = 100,903.90

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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.