Home / 99,722.49-137,555.87-67,905.69

Finding the Fourth Proportional to 99,722.49, 137,555.87 and 67,905.69

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Solution

The fourth proportional to 99,722.49, 137,555.87 and 67,905.69 is: 93,668.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,722.49 : 137,555.87 = 67,905.69 : x
  2. Step 2: Convert to fraction form
    99,722.49/137,555.87 = 67,905.69/x
  3. Step 3: Cross multiply
    99,722.49x = 137,555.87 × 67,905.69
  4. Step 4: Simplify right side
    99,722.49x = 9,340,825,926.37
  5. Step 5: Solve for x
    x = 9,340,825,926.37/99,722.49
  6. Step 6: Final answer
    x = 93,668.20

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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.