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Finding the Fourth Proportional to 181,543.80, 271,667.70 and 115,015.80

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Solution

The fourth proportional to 181,543.80, 271,667.70 and 115,015.80 is: 172,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,543.80 : 271,667.70 = 115,015.80 : x
  2. Step 2: Convert to fraction form
    181,543.80/271,667.70 = 115,015.80/x
  3. Step 3: Cross multiply
    181,543.80x = 271,667.70 × 115,015.80
  4. Step 4: Simplify right side
    181,543.80x = 31,246,077,849.66
  5. Step 5: Solve for x
    x = 31,246,077,849.66/181,543.80
  6. Step 6: Final answer
    x = 172,113.16

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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.