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Finding the Fourth Proportional to 111,139.90, 166,626.01 and 36,215.30

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Solution

The fourth proportional to 111,139.90, 166,626.01 and 36,215.30 is: 54,295.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,139.90 : 166,626.01 = 36,215.30 : x
  2. Step 2: Convert to fraction form
    111,139.90/166,626.01 = 36,215.30/x
  3. Step 3: Cross multiply
    111,139.90x = 166,626.01 × 36,215.30
  4. Step 4: Simplify right side
    111,139.90x = 6,034,411,401.79
  5. Step 5: Solve for x
    x = 6,034,411,401.79/111,139.90
  6. Step 6: Final answer
    x = 54,295.64

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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.