Home / 115,660.18-159,611.34-64,674.76

Finding the Fourth Proportional to 115,660.18, 159,611.34 and 64,674.76

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Solution

The fourth proportional to 115,660.18, 159,611.34 and 64,674.76 is: 89,251.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,660.18 : 159,611.34 = 64,674.76 : x
  2. Step 2: Convert to fraction form
    115,660.18/159,611.34 = 64,674.76/x
  3. Step 3: Cross multiply
    115,660.18x = 159,611.34 × 64,674.76
  4. Step 4: Simplify right side
    115,660.18x = 10,322,825,107.78
  5. Step 5: Solve for x
    x = 10,322,825,107.78/115,660.18
  6. Step 6: Final answer
    x = 89,251.33

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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.