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Finding the Fourth Proportional to 111,887.64, 167,905.08 and 52,740

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Solution

The fourth proportional to 111,887.64, 167,905.08 and 52,740 is: 79,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,887.64 : 167,905.08 = 52,740 : x
  2. Step 2: Convert to fraction form
    111,887.64/167,905.08 = 52,740/x
  3. Step 3: Cross multiply
    111,887.64x = 167,905.08 × 52,740
  4. Step 4: Simplify right side
    111,887.64x = 8,855,313,919.20
  5. Step 5: Solve for x
    x = 8,855,313,919.20/111,887.64
  6. Step 6: Final answer
    x = 79,144.70

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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.