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Finding the Fourth Proportional to 106,449.69, 146,902.70 and 68,789.55

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Solution

The fourth proportional to 106,449.69, 146,902.70 and 68,789.55 is: 94,930.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,449.69 : 146,902.70 = 68,789.55 : x
  2. Step 2: Convert to fraction form
    106,449.69/146,902.70 = 68,789.55/x
  3. Step 3: Cross multiply
    106,449.69x = 146,902.70 × 68,789.55
  4. Step 4: Simplify right side
    106,449.69x = 10,105,370,282.84
  5. Step 5: Solve for x
    x = 10,105,370,282.84/106,449.69
  6. Step 6: Final answer
    x = 94,930.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.