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Finding the Fourth Proportional to 111,301.71, 166,962.87 and 40,242.12

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Solution

The fourth proportional to 111,301.71, 166,962.87 and 40,242.12 is: 60,366.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,301.71 : 166,962.87 = 40,242.12 : x
  2. Step 2: Convert to fraction form
    111,301.71/166,962.87 = 40,242.12/x
  3. Step 3: Cross multiply
    111,301.71x = 166,962.87 × 40,242.12
  4. Step 4: Simplify right side
    111,301.71x = 6,718,939,850.08
  5. Step 5: Solve for x
    x = 6,718,939,850.08/111,301.71
  6. Step 6: Final answer
    x = 60,366.91

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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.