Home / 115,942.08-159,999.84-65,645.76

Finding the Fourth Proportional to 115,942.08, 159,999.84 and 65,645.76

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Solution

The fourth proportional to 115,942.08, 159,999.84 and 65,645.76 is: 90,591.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,942.08 : 159,999.84 = 65,645.76 : x
  2. Step 2: Convert to fraction form
    115,942.08/159,999.84 = 65,645.76/x
  3. Step 3: Cross multiply
    115,942.08x = 159,999.84 × 65,645.76
  4. Step 4: Simplify right side
    115,942.08x = 10,503,311,096.68
  5. Step 5: Solve for x
    x = 10,503,311,096.68/115,942.08
  6. Step 6: Final answer
    x = 90,591.02

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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.