Home / 149,890.60-206,849.57-81,907.58

Finding the Fourth Proportional to 149,890.60, 206,849.57 and 81,907.58

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Solution

The fourth proportional to 149,890.60, 206,849.57 and 81,907.58 is: 113,032.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,890.60 : 206,849.57 = 81,907.58 : x
  2. Step 2: Convert to fraction form
    149,890.60/206,849.57 = 81,907.58/x
  3. Step 3: Cross multiply
    149,890.60x = 206,849.57 × 81,907.58
  4. Step 4: Simplify right side
    149,890.60x = 16,942,546,258.95
  5. Step 5: Solve for x
    x = 16,942,546,258.95/149,890.60
  6. Step 6: Final answer
    x = 113,032.75

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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.