Home / 149,749.55-206,662.74-81,772.85

Finding the Fourth Proportional to 149,749.55, 206,662.74 and 81,772.85

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Solution

The fourth proportional to 149,749.55, 206,662.74 and 81,772.85 is: 112,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,749.55 : 206,662.74 = 81,772.85 : x
  2. Step 2: Convert to fraction form
    149,749.55/206,662.74 = 81,772.85/x
  3. Step 3: Cross multiply
    149,749.55x = 206,662.74 × 81,772.85
  4. Step 4: Simplify right side
    149,749.55x = 16,899,401,238.61
  5. Step 5: Solve for x
    x = 16,899,401,238.61/149,749.55
  6. Step 6: Final answer
    x = 112,851.10

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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.