Home / 165,864.11-228,892.61-90,412.61

Finding the Fourth Proportional to 165,864.11, 228,892.61 and 90,412.61

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Solution

The fourth proportional to 165,864.11, 228,892.61 and 90,412.61 is: 124,769.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,864.11 : 228,892.61 = 90,412.61 : x
  2. Step 2: Convert to fraction form
    165,864.11/228,892.61 = 90,412.61/x
  3. Step 3: Cross multiply
    165,864.11x = 228,892.61 × 90,412.61
  4. Step 4: Simplify right side
    165,864.11x = 20,694,777,361.38
  5. Step 5: Solve for x
    x = 20,694,777,361.38/165,864.11
  6. Step 6: Final answer
    x = 124,769.48

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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.