Home / 165,769.22-228,761.40-90,317.72

Finding the Fourth Proportional to 165,769.22, 228,761.40 and 90,317.72

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Solution

The fourth proportional to 165,769.22, 228,761.40 and 90,317.72 is: 124,638.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,769.22 : 228,761.40 = 90,317.72 : x
  2. Step 2: Convert to fraction form
    165,769.22/228,761.40 = 90,317.72/x
  3. Step 3: Cross multiply
    165,769.22x = 228,761.40 × 90,317.72
  4. Step 4: Simplify right side
    165,769.22x = 20,661,208,072.01
  5. Step 5: Solve for x
    x = 20,661,208,072.01/165,769.22
  6. Step 6: Final answer
    x = 124,638.39

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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.