Home / 128,165.03-192,286.51-90,797.41

Finding the Fourth Proportional to 128,165.03, 192,286.51 and 90,797.41

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Solution

The fourth proportional to 128,165.03, 192,286.51 and 90,797.41 is: 136,223.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,165.03 : 192,286.51 = 90,797.41 : x
  2. Step 2: Convert to fraction form
    128,165.03/192,286.51 = 90,797.41/x
  3. Step 3: Cross multiply
    128,165.03x = 192,286.51 × 90,797.41
  4. Step 4: Simplify right side
    128,165.03x = 17,459,116,017.69
  5. Step 5: Solve for x
    x = 17,459,116,017.69/128,165.03
  6. Step 6: Final answer
    x = 136,223.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.