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Finding the Fourth Proportional to 169,968.64, 254,952.78 and 80,952.28

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Solution

The fourth proportional to 169,968.64, 254,952.78 and 80,952.28 is: 121,428.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,968.64 : 254,952.78 = 80,952.28 : x
  2. Step 2: Convert to fraction form
    169,968.64/254,952.78 = 80,952.28/x
  3. Step 3: Cross multiply
    169,968.64x = 254,952.78 × 80,952.28
  4. Step 4: Simplify right side
    169,968.64x = 20,639,008,833.34
  5. Step 5: Solve for x
    x = 20,639,008,833.34/169,968.64
  6. Step 6: Final answer
    x = 121,428.33

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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.