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Finding the Fourth Proportional to 172,676.71, 258,536.71 and 88,255.07

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Solution

The fourth proportional to 172,676.71, 258,536.71 and 88,255.07 is: 132,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,676.71 : 258,536.71 = 88,255.07 : x
  2. Step 2: Convert to fraction form
    172,676.71/258,536.71 = 88,255.07/x
  3. Step 3: Cross multiply
    172,676.71x = 258,536.71 × 88,255.07
  4. Step 4: Simplify right side
    172,676.71x = 22,817,175,225.77
  5. Step 5: Solve for x
    x = 22,817,175,225.77/172,676.71
  6. Step 6: Final answer
    x = 132,138.12

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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.