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Finding the Fourth Proportional to 99,759.52, 149,479.98 and 69,830.56

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Solution

The fourth proportional to 99,759.52, 149,479.98 and 69,830.56 is: 104,634.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,759.52 : 149,479.98 = 69,830.56 : x
  2. Step 2: Convert to fraction form
    99,759.52/149,479.98 = 69,830.56/x
  3. Step 3: Cross multiply
    99,759.52x = 149,479.98 × 69,830.56
  4. Step 4: Simplify right side
    99,759.52x = 10,438,270,712.19
  5. Step 5: Solve for x
    x = 10,438,270,712.19/99,759.52
  6. Step 6: Final answer
    x = 104,634.33

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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.