Home / 115,856.19-159,844.39-64,861.43

Finding the Fourth Proportional to 115,856.19, 159,844.39 and 64,861.43

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Solution

The fourth proportional to 115,856.19, 159,844.39 and 64,861.43 is: 89,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,856.19 : 159,844.39 = 64,861.43 : x
  2. Step 2: Convert to fraction form
    115,856.19/159,844.39 = 64,861.43/x
  3. Step 3: Cross multiply
    115,856.19x = 159,844.39 × 64,861.43
  4. Step 4: Simplify right side
    115,856.19x = 10,367,734,751.50
  5. Step 5: Solve for x
    x = 10,367,734,751.50/115,856.19
  6. Step 6: Final answer
    x = 89,487.97

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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.