Home / 149,824.20-206,749.49-81,840.19

Finding the Fourth Proportional to 149,824.20, 206,749.49 and 81,840.19

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Solution

The fourth proportional to 149,824.20, 206,749.49 and 81,840.19 is: 112,935.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,824.20 : 206,749.49 = 81,840.19 : x
  2. Step 2: Convert to fraction form
    149,824.20/206,749.49 = 81,840.19/x
  3. Step 3: Cross multiply
    149,824.20x = 206,749.49 × 81,840.19
  4. Step 4: Simplify right side
    149,824.20x = 16,920,416,617.93
  5. Step 5: Solve for x
    x = 16,920,416,617.93/149,824.20
  6. Step 6: Final answer
    x = 112,935.14

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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.