Home / 99,338.62-137,138.10-76,626.62

Finding the Fourth Proportional to 99,338.62, 137,138.10 and 76,626.62

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Solution

The fourth proportional to 99,338.62, 137,138.10 and 76,626.62 is: 105,783.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,338.62 : 137,138.10 = 76,626.62 : x
  2. Step 2: Convert to fraction form
    99,338.62/137,138.10 = 76,626.62/x
  3. Step 3: Cross multiply
    99,338.62x = 137,138.10 × 76,626.62
  4. Step 4: Simplify right side
    99,338.62x = 10,508,429,388.85
  5. Step 5: Solve for x
    x = 10,508,429,388.85/99,338.62
  6. Step 6: Final answer
    x = 105,783.93

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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.