Home / 149,829.72-206,765.32-81,847.20

Finding the Fourth Proportional to 149,829.72, 206,765.32 and 81,847.20

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Solution

The fourth proportional to 149,829.72, 206,765.32 and 81,847.20 is: 112,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,829.72 : 206,765.32 = 81,847.20 : x
  2. Step 2: Convert to fraction form
    149,829.72/206,765.32 = 81,847.20/x
  3. Step 3: Cross multiply
    149,829.72x = 206,765.32 × 81,847.20
  4. Step 4: Simplify right side
    149,829.72x = 16,923,162,499.10
  5. Step 5: Solve for x
    x = 16,923,162,499.10/149,829.72
  6. Step 6: Final answer
    x = 112,949.30

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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.