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Finding the Fourth Proportional to 111,668.16, 167,354.46 and 81,946.56

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Solution

The fourth proportional to 111,668.16, 167,354.46 and 81,946.56 is: 122,811.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,668.16 : 167,354.46 = 81,946.56 : x
  2. Step 2: Convert to fraction form
    111,668.16/167,354.46 = 81,946.56/x
  3. Step 3: Cross multiply
    111,668.16x = 167,354.46 × 81,946.56
  4. Step 4: Simplify right side
    111,668.16x = 13,714,122,297.66
  5. Step 5: Solve for x
    x = 13,714,122,297.66/111,668.16
  6. Step 6: Final answer
    x = 122,811.39

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1.5x scale

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.