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Finding the Fourth Proportional to 111,358.02, 166,814.52 and 66,960.48

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Solution

The fourth proportional to 111,358.02, 166,814.52 and 66,960.48 is: 100,306.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,358.02 : 166,814.52 = 66,960.48 : x
  2. Step 2: Convert to fraction form
    111,358.02/166,814.52 = 66,960.48/x
  3. Step 3: Cross multiply
    111,358.02x = 166,814.52 × 66,960.48
  4. Step 4: Simplify right side
    111,358.02x = 11,169,980,330.17
  5. Step 5: Solve for x
    x = 11,169,980,330.17/111,358.02
  6. Step 6: Final answer
    x = 100,306.92

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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.