Home / 149,525.09-206,338.83-85,002.78

Finding the Fourth Proportional to 149,525.09, 206,338.83 and 85,002.78

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Solution

The fourth proportional to 149,525.09, 206,338.83 and 85,002.78 is: 117,300.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,525.09 : 206,338.83 = 85,002.78 : x
  2. Step 2: Convert to fraction form
    149,525.09/206,338.83 = 85,002.78/x
  3. Step 3: Cross multiply
    149,525.09x = 206,338.83 × 85,002.78
  4. Step 4: Simplify right side
    149,525.09x = 17,539,374,626.96
  5. Step 5: Solve for x
    x = 17,539,374,626.96/149,525.09
  6. Step 6: Final answer
    x = 117,300.55

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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.