Home / 149,759.28-206,668.52-81,777.64

Finding the Fourth Proportional to 149,759.28, 206,668.52 and 81,777.64

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Solution

The fourth proportional to 149,759.28, 206,668.52 and 81,777.64 is: 112,853.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,759.28 : 206,668.52 = 81,777.64 : x
  2. Step 2: Convert to fraction form
    149,759.28/206,668.52 = 81,777.64/x
  3. Step 3: Cross multiply
    149,759.28x = 206,668.52 × 81,777.64
  4. Step 4: Simplify right side
    149,759.28x = 16,900,863,827.89
  5. Step 5: Solve for x
    x = 16,900,863,827.89/149,759.28
  6. Step 6: Final answer
    x = 112,853.53

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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.