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Finding the Fourth Proportional to 172,607.88, 258,791.49 and 76,492.76

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Solution

The fourth proportional to 172,607.88, 258,791.49 and 76,492.76 is: 114,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,607.88 : 258,791.49 = 76,492.76 : x
  2. Step 2: Convert to fraction form
    172,607.88/258,791.49 = 76,492.76/x
  3. Step 3: Cross multiply
    172,607.88x = 258,791.49 × 76,492.76
  4. Step 4: Simplify right side
    172,607.88x = 19,795,675,334.61
  5. Step 5: Solve for x
    x = 19,795,675,334.61/172,607.88
  6. Step 6: Final answer
    x = 114,685.81

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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.