Home / 149,788.85-206,700.15-81,792.28

Finding the Fourth Proportional to 149,788.85, 206,700.15 and 81,792.28

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Solution

The fourth proportional to 149,788.85, 206,700.15 and 81,792.28 is: 112,868.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,788.85 : 206,700.15 = 81,792.28 : x
  2. Step 2: Convert to fraction form
    149,788.85/206,700.15 = 81,792.28/x
  3. Step 3: Cross multiply
    149,788.85x = 206,700.15 × 81,792.28
  4. Step 4: Simplify right side
    149,788.85x = 16,906,477,109.94
  5. Step 5: Solve for x
    x = 16,906,477,109.94/149,788.85
  6. Step 6: Final answer
    x = 112,868.73

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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.