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Finding the Fourth Proportional to 172,650.89, 258,631.89 and 137,172.29

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Solution

The fourth proportional to 172,650.89, 258,631.89 and 137,172.29 is: 205,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,650.89 : 258,631.89 = 137,172.29 : x
  2. Step 2: Convert to fraction form
    172,650.89/258,631.89 = 137,172.29/x
  3. Step 3: Cross multiply
    172,650.89x = 258,631.89 × 137,172.29
  4. Step 4: Simplify right side
    172,650.89x = 35,477,126,810.77
  5. Step 5: Solve for x
    x = 35,477,126,810.77/172,650.89
  6. Step 6: Final answer
    x = 205,484.76

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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.