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Finding the Fourth Proportional to 115,555.41, 159,474.02 and 64,568.48

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Solution

The fourth proportional to 115,555.41, 159,474.02 and 64,568.48 is: 89,108.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,555.41 : 159,474.02 = 64,568.48 : x
  2. Step 2: Convert to fraction form
    115,555.41/159,474.02 = 64,568.48/x
  3. Step 3: Cross multiply
    115,555.41x = 159,474.02 × 64,568.48
  4. Step 4: Simplify right side
    115,555.41x = 10,296,993,950.68
  5. Step 5: Solve for x
    x = 10,296,993,950.68/115,555.41
  6. Step 6: Final answer
    x = 89,108.71

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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.