Home / 165,921.09-228,972.47-90,469.59

Finding the Fourth Proportional to 165,921.09, 228,972.47 and 90,469.59

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Solution

The fourth proportional to 165,921.09, 228,972.47 and 90,469.59 is: 124,848.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,921.09 : 228,972.47 = 90,469.59 : x
  2. Step 2: Convert to fraction form
    165,921.09/228,972.47 = 90,469.59/x
  3. Step 3: Cross multiply
    165,921.09x = 228,972.47 × 90,469.59
  4. Step 4: Simplify right side
    165,921.09x = 20,715,045,029.84
  5. Step 5: Solve for x
    x = 20,715,045,029.84/165,921.09
  6. Step 6: Final answer
    x = 124,848.78

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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.