Home / 149,431.93-206,214.73-81,448.90

Finding the Fourth Proportional to 149,431.93, 206,214.73 and 81,448.90

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Solution

The fourth proportional to 149,431.93, 206,214.73 and 81,448.90 is: 112,398.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,431.93 : 206,214.73 = 81,448.90 : x
  2. Step 2: Convert to fraction form
    149,431.93/206,214.73 = 81,448.90/x
  3. Step 3: Cross multiply
    149,431.93x = 206,214.73 × 81,448.90
  4. Step 4: Simplify right side
    149,431.93x = 16,795,962,922.30
  5. Step 5: Solve for x
    x = 16,795,962,922.30/149,431.93
  6. Step 6: Final answer
    x = 112,398.76

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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.