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Finding the Fourth Proportional to 111,165, 153,406.79 and 60,176.68

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Solution

The fourth proportional to 111,165, 153,406.79 and 60,176.68 is: 83,043.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,165 : 153,406.79 = 60,176.68 : x
  2. Step 2: Convert to fraction form
    111,165/153,406.79 = 60,176.68/x
  3. Step 3: Cross multiply
    111,165x = 153,406.79 × 60,176.68
  4. Step 4: Simplify right side
    111,165x = 9,231,511,311.66
  5. Step 5: Solve for x
    x = 9,231,511,311.66/111,165
  6. Step 6: Final answer
    x = 83,043.33

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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.