Home / 149,377.24-206,137.94-81,394.68

Finding the Fourth Proportional to 149,377.24, 206,137.94 and 81,394.68

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Solution

The fourth proportional to 149,377.24, 206,137.94 and 81,394.68 is: 112,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,377.24 : 206,137.94 = 81,394.68 : x
  2. Step 2: Convert to fraction form
    149,377.24/206,137.94 = 81,394.68/x
  3. Step 3: Cross multiply
    149,377.24x = 206,137.94 × 81,394.68
  4. Step 4: Simplify right side
    149,377.24x = 16,778,531,662.16
  5. Step 5: Solve for x
    x = 16,778,531,662.16/149,377.24
  6. Step 6: Final answer
    x = 112,323.21

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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.