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Finding the Fourth Proportional to 173,085.76, 238,842.17 and 100,469.39

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Solution

The fourth proportional to 173,085.76, 238,842.17 and 100,469.39 is: 138,638.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,085.76 : 238,842.17 = 100,469.39 : x
  2. Step 2: Convert to fraction form
    173,085.76/238,842.17 = 100,469.39/x
  3. Step 3: Cross multiply
    173,085.76x = 238,842.17 × 100,469.39
  4. Step 4: Simplify right side
    173,085.76x = 23,996,327,126.18
  5. Step 5: Solve for x
    x = 23,996,327,126.18/173,085.76
  6. Step 6: Final answer
    x = 138,638.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.