Home / 149,556.50-206,380.68-89,125.76

Finding the Fourth Proportional to 149,556.50, 206,380.68 and 89,125.76

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Solution

The fourth proportional to 149,556.50, 206,380.68 and 89,125.76 is: 122,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,556.50 : 206,380.68 = 89,125.76 : x
  2. Step 2: Convert to fraction form
    149,556.50/206,380.68 = 89,125.76/x
  3. Step 3: Cross multiply
    149,556.50x = 206,380.68 × 89,125.76
  4. Step 4: Simplify right side
    149,556.50x = 18,393,834,954.32
  5. Step 5: Solve for x
    x = 18,393,834,954.32/149,556.50
  6. Step 6: Final answer
    x = 122,989.20

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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.