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Finding the Fourth Proportional to 165,486, 228,372.48 and 90,036.12

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Solution

The fourth proportional to 165,486, 228,372.48 and 90,036.12 is: 124,250.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,486 : 228,372.48 = 90,036.12 : x
  2. Step 2: Convert to fraction form
    165,486/228,372.48 = 90,036.12/x
  3. Step 3: Cross multiply
    165,486x = 228,372.48 × 90,036.12
  4. Step 4: Simplify right side
    165,486x = 20,561,772,013.98
  5. Step 5: Solve for x
    x = 20,561,772,013.98/165,486
  6. Step 6: Final answer
    x = 124,250.82

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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.