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Finding the Fourth Proportional to 116,793.78, 161,175.57 and 66,492.78

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Solution

The fourth proportional to 116,793.78, 161,175.57 and 66,492.78 is: 91,760.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,793.78 : 161,175.57 = 66,492.78 : x
  2. Step 2: Convert to fraction form
    116,793.78/161,175.57 = 66,492.78/x
  3. Step 3: Cross multiply
    116,793.78x = 161,175.57 × 66,492.78
  4. Step 4: Simplify right side
    116,793.78x = 10,717,011,717.38
  5. Step 5: Solve for x
    x = 10,717,011,717.38/116,793.78
  6. Step 6: Final answer
    x = 91,760.12

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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.