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Finding the Fourth Proportional to 173,126.84, 259,723.92 and 66,503

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Solution

The fourth proportional to 173,126.84, 259,723.92 and 66,503 is: 99,767.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,126.84 : 259,723.92 = 66,503 : x
  2. Step 2: Convert to fraction form
    173,126.84/259,723.92 = 66,503/x
  3. Step 3: Cross multiply
    173,126.84x = 259,723.92 × 66,503
  4. Step 4: Simplify right side
    173,126.84x = 17,272,419,851.76
  5. Step 5: Solve for x
    x = 17,272,419,851.76/173,126.84
  6. Step 6: Final answer
    x = 99,767.43

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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.