Home / 149,005.70-205,626.76-81,022.71

Finding the Fourth Proportional to 149,005.70, 205,626.76 and 81,022.71

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Solution

The fourth proportional to 149,005.70, 205,626.76 and 81,022.71 is: 111,810.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,005.70 : 205,626.76 = 81,022.71 : x
  2. Step 2: Convert to fraction form
    149,005.70/205,626.76 = 81,022.71/x
  3. Step 3: Cross multiply
    149,005.70x = 205,626.76 × 81,022.71
  4. Step 4: Simplify right side
    149,005.70x = 16,660,437,912.26
  5. Step 5: Solve for x
    x = 16,660,437,912.26/149,005.70
  6. Step 6: Final answer
    x = 111,810.74

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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.