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Finding the Fourth Proportional to 181,512.64, 271,991.76 and 76,274.08

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Solution

The fourth proportional to 181,512.64, 271,991.76 and 76,274.08 is: 114,294.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,512.64 : 271,991.76 = 76,274.08 : x
  2. Step 2: Convert to fraction form
    181,512.64/271,991.76 = 76,274.08/x
  3. Step 3: Cross multiply
    181,512.64x = 271,991.76 × 76,274.08
  4. Step 4: Simplify right side
    181,512.64x = 20,745,921,261.58
  5. Step 5: Solve for x
    x = 20,745,921,261.58/181,512.64
  6. Step 6: Final answer
    x = 114,294.64

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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.