Home / 149,636.50-206,517.54-85,986.70

Finding the Fourth Proportional to 149,636.50, 206,517.54 and 85,986.70

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Solution

The fourth proportional to 149,636.50, 206,517.54 and 85,986.70 is: 118,672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,636.50 : 206,517.54 = 85,986.70 : x
  2. Step 2: Convert to fraction form
    149,636.50/206,517.54 = 85,986.70/x
  3. Step 3: Cross multiply
    149,636.50x = 206,517.54 × 85,986.70
  4. Step 4: Simplify right side
    149,636.50x = 17,757,761,756.72
  5. Step 5: Solve for x
    x = 17,757,761,756.72/149,636.50
  6. Step 6: Final answer
    x = 118,672.66

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1.5x scale

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.