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Finding the Fourth Proportional to 172,726.78, 259,165.23 and 60,487.51

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Solution

The fourth proportional to 172,726.78, 259,165.23 and 60,487.51 is: 90,757.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,726.78 : 259,165.23 = 60,487.51 : x
  2. Step 2: Convert to fraction form
    172,726.78/259,165.23 = 60,487.51/x
  3. Step 3: Cross multiply
    172,726.78x = 259,165.23 × 60,487.51
  4. Step 4: Simplify right side
    172,726.78x = 15,676,259,441.28
  5. Step 5: Solve for x
    x = 15,676,259,441.28/172,726.78
  6. Step 6: Final answer
    x = 90,757.55

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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.