Home / 149,778.21-206,643.25-91,613.58

Finding the Fourth Proportional to 149,778.21, 206,643.25 and 91,613.58

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Solution

The fourth proportional to 149,778.21, 206,643.25 and 91,613.58 is: 126,395.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,778.21 : 206,643.25 = 91,613.58 : x
  2. Step 2: Convert to fraction form
    149,778.21/206,643.25 = 91,613.58/x
  3. Step 3: Cross multiply
    149,778.21x = 206,643.25 × 91,613.58
  4. Step 4: Simplify right side
    149,778.21x = 18,931,328,417.31
  5. Step 5: Solve for x
    x = 18,931,328,417.31/149,778.21
  6. Step 6: Final answer
    x = 126,395.74

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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.