Home / 137,834.87-190,253.41-80,489.70

Finding the Fourth Proportional to 137,834.87, 190,253.41 and 80,489.70

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Solution

The fourth proportional to 137,834.87, 190,253.41 and 80,489.70 is: 111,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,834.87 : 190,253.41 = 80,489.70 : x
  2. Step 2: Convert to fraction form
    137,834.87/190,253.41 = 80,489.70/x
  3. Step 3: Cross multiply
    137,834.87x = 190,253.41 × 80,489.70
  4. Step 4: Simplify right side
    137,834.87x = 15,313,439,693.65
  5. Step 5: Solve for x
    x = 15,313,439,693.65/137,834.87
  6. Step 6: Final answer
    x = 111,099.90

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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.