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Finding the Fourth Proportional to 104,912.98, 157,415.97 and 54,981.20

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Solution

The fourth proportional to 104,912.98, 157,415.97 and 54,981.20 is: 82,496.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,912.98 : 157,415.97 = 54,981.20 : x
  2. Step 2: Convert to fraction form
    104,912.98/157,415.97 = 54,981.20/x
  3. Step 3: Cross multiply
    104,912.98x = 157,415.97 × 54,981.20
  4. Step 4: Simplify right side
    104,912.98x = 8,654,918,929.76
  5. Step 5: Solve for x
    x = 8,654,918,929.76/104,912.98
  6. Step 6: Final answer
    x = 82,496.17

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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.