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Finding the Fourth Proportional to 172,686.39, 259,177.20 and 67,579.17

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Solution

The fourth proportional to 172,686.39, 259,177.20 and 67,579.17 is: 101,426.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,686.39 : 259,177.20 = 67,579.17 : x
  2. Step 2: Convert to fraction form
    172,686.39/259,177.20 = 67,579.17/x
  3. Step 3: Cross multiply
    172,686.39x = 259,177.20 × 67,579.17
  4. Step 4: Simplify right side
    172,686.39x = 17,514,980,058.92
  5. Step 5: Solve for x
    x = 17,514,980,058.92/172,686.39
  6. Step 6: Final answer
    x = 101,426.52

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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.