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Finding the Fourth Proportional to 99,759.98, 148,910.10 and 87,950.54

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Solution

The fourth proportional to 99,759.98, 148,910.10 and 87,950.54 is: 131,282.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,759.98 : 148,910.10 = 87,950.54 : x
  2. Step 2: Convert to fraction form
    99,759.98/148,910.10 = 87,950.54/x
  3. Step 3: Cross multiply
    99,759.98x = 148,910.10 × 87,950.54
  4. Step 4: Simplify right side
    99,759.98x = 13,096,723,266.70
  5. Step 5: Solve for x
    x = 13,096,723,266.70/99,759.98
  6. Step 6: Final answer
    x = 131,282.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.