Home / 149,180.56-205,869.18-81,197.80

Finding the Fourth Proportional to 149,180.56, 205,869.18 and 81,197.80

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Solution

The fourth proportional to 149,180.56, 205,869.18 and 81,197.80 is: 112,052.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,180.56 : 205,869.18 = 81,197.80 : x
  2. Step 2: Convert to fraction form
    149,180.56/205,869.18 = 81,197.80/x
  3. Step 3: Cross multiply
    149,180.56x = 205,869.18 × 81,197.80
  4. Step 4: Simplify right side
    149,180.56x = 16,716,124,503.80
  5. Step 5: Solve for x
    x = 16,716,124,503.80/149,180.56
  6. Step 6: Final answer
    x = 112,052.97

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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.