Home / 172,971.10-259,483.38-73,131.72

Finding the Fourth Proportional to 172,971.10, 259,483.38 and 73,131.72

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Solution

The fourth proportional to 172,971.10, 259,483.38 and 73,131.72 is: 109,708.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,971.10 : 259,483.38 = 73,131.72 : x
  2. Step 2: Convert to fraction form
    172,971.10/259,483.38 = 73,131.72/x
  3. Step 3: Cross multiply
    172,971.10x = 259,483.38 × 73,131.72
  4. Step 4: Simplify right side
    172,971.10x = 18,976,465,890.81
  5. Step 5: Solve for x
    x = 18,976,465,890.81/172,971.10
  6. Step 6: Final answer
    x = 109,708.88

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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.