Home / 165,785.70-228,784.26-90,334.20

Finding the Fourth Proportional to 165,785.70, 228,784.26 and 90,334.20

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Solution

The fourth proportional to 165,785.70, 228,784.26 and 90,334.20 is: 124,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,785.70 : 228,784.26 = 90,334.20 : x
  2. Step 2: Convert to fraction form
    165,785.70/228,784.26 = 90,334.20/x
  3. Step 3: Cross multiply
    165,785.70x = 228,784.26 × 90,334.20
  4. Step 4: Simplify right side
    165,785.70x = 20,667,043,099.69
  5. Step 5: Solve for x
    x = 20,667,043,099.69/165,785.70
  6. Step 6: Final answer
    x = 124,661.19

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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.