Home / 120,716.16-166,487.67-90,568.32

Finding the Fourth Proportional to 120,716.16, 166,487.67 and 90,568.32

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Solution

The fourth proportional to 120,716.16, 166,487.67 and 90,568.32 is: 124,908.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,716.16 : 166,487.67 = 90,568.32 : x
  2. Step 2: Convert to fraction form
    120,716.16/166,487.67 = 90,568.32/x
  3. Step 3: Cross multiply
    120,716.16x = 166,487.67 × 90,568.32
  4. Step 4: Simplify right side
    120,716.16x = 15,078,508,572.61
  5. Step 5: Solve for x
    x = 15,078,508,572.61/120,716.16
  6. Step 6: Final answer
    x = 124,908.78

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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.