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Finding the Fourth Proportional to 165,310.56, 228,128.40 and 89,859.60

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Solution

The fourth proportional to 165,310.56, 228,128.40 and 89,859.60 is: 124,006.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,310.56 : 228,128.40 = 89,859.60 : x
  2. Step 2: Convert to fraction form
    165,310.56/228,128.40 = 89,859.60/x
  3. Step 3: Cross multiply
    165,310.56x = 228,128.40 × 89,859.60
  4. Step 4: Simplify right side
    165,310.56x = 20,499,526,772.64
  5. Step 5: Solve for x
    x = 20,499,526,772.64/165,310.56
  6. Step 6: Final answer
    x = 124,006.15

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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.