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Finding the Fourth Proportional to 169,971.16, 254,956.46 and 80,954.68

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Solution

The fourth proportional to 169,971.16, 254,956.46 and 80,954.68 is: 121,431.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,971.16 : 254,956.46 = 80,954.68 : x
  2. Step 2: Convert to fraction form
    169,971.16/254,956.46 = 80,954.68/x
  3. Step 3: Cross multiply
    169,971.16x = 254,956.46 × 80,954.68
  4. Step 4: Simplify right side
    169,971.16x = 20,639,918,633.23
  5. Step 5: Solve for x
    x = 20,639,918,633.23/169,971.16
  6. Step 6: Final answer
    x = 121,431.89

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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.