Home / 165,428.40-228,289.92-89,976.96

Finding the Fourth Proportional to 165,428.40, 228,289.92 and 89,976.96

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Solution

The fourth proportional to 165,428.40, 228,289.92 and 89,976.96 is: 124,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,428.40 : 228,289.92 = 89,976.96 : x
  2. Step 2: Convert to fraction form
    165,428.40/228,289.92 = 89,976.96/x
  3. Step 3: Cross multiply
    165,428.40x = 228,289.92 × 89,976.96
  4. Step 4: Simplify right side
    165,428.40x = 20,540,833,000.24
  5. Step 5: Solve for x
    x = 20,540,833,000.24/165,428.40
  6. Step 6: Final answer
    x = 124,167.51

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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.