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Finding the Fourth Proportional to 230,878.11, 346,351.80 and 81,092

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Solution

The fourth proportional to 230,878.11, 346,351.80 and 81,092 is: 121,650.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,878.11 : 346,351.80 = 81,092 : x
  2. Step 2: Convert to fraction form
    230,878.11/346,351.80 = 81,092/x
  3. Step 3: Cross multiply
    230,878.11x = 346,351.80 × 81,092
  4. Step 4: Simplify right side
    230,878.11x = 28,086,360,165.60
  5. Step 5: Solve for x
    x = 28,086,360,165.60/230,878.11
  6. Step 6: Final answer
    x = 121,650.16

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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.