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Finding the Fourth Proportional to 111,372.13, 166,978.83 and 52,175.53

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Solution

The fourth proportional to 111,372.13, 166,978.83 and 52,175.53 is: 78,226.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,372.13 : 166,978.83 = 52,175.53 : x
  2. Step 2: Convert to fraction form
    111,372.13/166,978.83 = 52,175.53/x
  3. Step 3: Cross multiply
    111,372.13x = 166,978.83 × 52,175.53
  4. Step 4: Simplify right side
    111,372.13x = 8,712,208,954.03
  5. Step 5: Solve for x
    x = 8,712,208,954.03/111,372.13
  6. Step 6: Final answer
    x = 78,226.11

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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.