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Finding the Fourth Proportional to 172,686.38, 259,177.19 and 67,579.16

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Solution

The fourth proportional to 172,686.38, 259,177.19 and 67,579.16 is: 101,426.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,686.38 : 259,177.19 = 67,579.16 : x
  2. Step 2: Convert to fraction form
    172,686.38/259,177.19 = 67,579.16/x
  3. Step 3: Cross multiply
    172,686.38x = 259,177.19 × 67,579.16
  4. Step 4: Simplify right side
    172,686.38x = 17,514,975,157.58
  5. Step 5: Solve for x
    x = 17,514,975,157.58/172,686.38
  6. Step 6: Final answer
    x = 101,426.50

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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.