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Finding the Fourth Proportional to 181,521.70, 271,958.55 and 87,820.90

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Solution

The fourth proportional to 181,521.70, 271,958.55 and 87,820.90 is: 131,574.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,521.70 : 271,958.55 = 87,820.90 : x
  2. Step 2: Convert to fraction form
    181,521.70/271,958.55 = 87,820.90/x
  3. Step 3: Cross multiply
    181,521.70x = 271,958.55 × 87,820.90
  4. Step 4: Simplify right side
    181,521.70x = 23,883,644,623.70
  5. Step 5: Solve for x
    x = 23,883,644,623.70/181,521.70
  6. Step 6: Final answer
    x = 131,574.60

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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.