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Finding the Fourth Proportional to 99,910.20, 149,865.30 and 26,038.20

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Solution

The fourth proportional to 99,910.20, 149,865.30 and 26,038.20 is: 39,057.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,910.20 : 149,865.30 = 26,038.20 : x
  2. Step 2: Convert to fraction form
    99,910.20/149,865.30 = 26,038.20/x
  3. Step 3: Cross multiply
    99,910.20x = 149,865.30 × 26,038.20
  4. Step 4: Simplify right side
    99,910.20x = 3,902,222,654.46
  5. Step 5: Solve for x
    x = 3,902,222,654.46/99,910.20
  6. Step 6: Final answer
    x = 39,057.30

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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.