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Finding the Fourth Proportional to 172,916.89, 259,398.02 and 67,722.19

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Solution

The fourth proportional to 172,916.89, 259,398.02 and 67,722.19 is: 101,592.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,916.89 : 259,398.02 = 67,722.19 : x
  2. Step 2: Convert to fraction form
    172,916.89/259,398.02 = 67,722.19/x
  3. Step 3: Cross multiply
    172,916.89x = 259,398.02 × 67,722.19
  4. Step 4: Simplify right side
    172,916.89x = 17,567,001,996.06
  5. Step 5: Solve for x
    x = 17,567,001,996.06/172,916.89
  6. Step 6: Final answer
    x = 101,592.17

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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.