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Finding the Fourth Proportional to 172,514.55, 258,617.93 and 67,309.05

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Solution

The fourth proportional to 172,514.55, 258,617.93 and 67,309.05 is: 100,903.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,514.55 : 258,617.93 = 67,309.05 : x
  2. Step 2: Convert to fraction form
    172,514.55/258,617.93 = 67,309.05/x
  3. Step 3: Cross multiply
    172,514.55x = 258,617.93 × 67,309.05
  4. Step 4: Simplify right side
    172,514.55x = 17,407,326,844.72
  5. Step 5: Solve for x
    x = 17,407,326,844.72/172,514.55
  6. Step 6: Final answer
    x = 100,903.53

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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.