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Finding the Fourth Proportional to 99,232.78, 136,942.17 and 53,911.09

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Solution

The fourth proportional to 99,232.78, 136,942.17 and 53,911.09 is: 74,397.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,232.78 : 136,942.17 = 53,911.09 : x
  2. Step 2: Convert to fraction form
    99,232.78/136,942.17 = 53,911.09/x
  3. Step 3: Cross multiply
    99,232.78x = 136,942.17 × 53,911.09
  4. Step 4: Simplify right side
    99,232.78x = 7,382,701,651.67
  5. Step 5: Solve for x
    x = 7,382,701,651.67/99,232.78
  6. Step 6: Final answer
    x = 74,397.81

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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.