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Finding the Fourth Proportional to 111,074.73, 153,279.32 and 63,343.44

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Solution

The fourth proportional to 111,074.73, 153,279.32 and 63,343.44 is: 87,411.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,074.73 : 153,279.32 = 63,343.44 : x
  2. Step 2: Convert to fraction form
    111,074.73/153,279.32 = 63,343.44/x
  3. Step 3: Cross multiply
    111,074.73x = 153,279.32 × 63,343.44
  4. Step 4: Simplify right side
    111,074.73x = 9,709,239,092.94
  5. Step 5: Solve for x
    x = 9,709,239,092.94/111,074.73
  6. Step 6: Final answer
    x = 87,411.77

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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.