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Finding the Fourth Proportional to 195,129.72, 292,660.56 and 54,855

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Solution

The fourth proportional to 195,129.72, 292,660.56 and 54,855 is: 82,272.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,129.72 : 292,660.56 = 54,855 : x
  2. Step 2: Convert to fraction form
    195,129.72/292,660.56 = 54,855/x
  3. Step 3: Cross multiply
    195,129.72x = 292,660.56 × 54,855
  4. Step 4: Simplify right side
    195,129.72x = 16,053,895,018.80
  5. Step 5: Solve for x
    x = 16,053,895,018.80/195,129.72
  6. Step 6: Final answer
    x = 82,272.94

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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.