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Finding the Fourth Proportional to 181,381.68, 271,620 and 114,620.40

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Solution

The fourth proportional to 181,381.68, 271,620 and 114,620.40 is: 171,644.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,381.68 : 271,620 = 114,620.40 : x
  2. Step 2: Convert to fraction form
    181,381.68/271,620 = 114,620.40/x
  3. Step 3: Cross multiply
    181,381.68x = 271,620 × 114,620.40
  4. Step 4: Simplify right side
    181,381.68x = 31,133,193,048
  5. Step 5: Solve for x
    x = 31,133,193,048/181,381.68
  6. Step 6: Final answer
    x = 171,644.64

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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.