Home / 149,551.50-206,373.78-89,120.76

Finding the Fourth Proportional to 149,551.50, 206,373.78 and 89,120.76

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Solution

The fourth proportional to 149,551.50, 206,373.78 and 89,120.76 is: 122,982.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,551.50 : 206,373.78 = 89,120.76 : x
  2. Step 2: Convert to fraction form
    149,551.50/206,373.78 = 89,120.76/x
  3. Step 3: Cross multiply
    149,551.50x = 206,373.78 × 89,120.76
  4. Step 4: Simplify right side
    149,551.50x = 18,392,188,117.67
  5. Step 5: Solve for x
    x = 18,392,188,117.67/149,551.50
  6. Step 6: Final answer
    x = 122,982.30

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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.