Home / 149,865.41-206,811.82-81,880.92

Finding the Fourth Proportional to 149,865.41, 206,811.82 and 81,880.92

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Solution

The fourth proportional to 149,865.41, 206,811.82 and 81,880.92 is: 112,994.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,865.41 : 206,811.82 = 81,880.92 : x
  2. Step 2: Convert to fraction form
    149,865.41/206,811.82 = 81,880.92/x
  3. Step 3: Cross multiply
    149,865.41x = 206,811.82 × 81,880.92
  4. Step 4: Simplify right side
    149,865.41x = 16,933,941,162.04
  5. Step 5: Solve for x
    x = 16,933,941,162.04/149,865.41
  6. Step 6: Final answer
    x = 112,994.33

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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.