Home / 165,612,378.43-228,541,145.66-90,261,085.56

Finding the Fourth Proportional to 165,612,378.43, 228,541,145.66 and 90,261,085.56

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Solution

The fourth proportional to 165,612,378.43, 228,541,145.66 and 90,261,085.56 is: 124,558,152.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,612,378.43 : 228,541,145.66 = 90,261,085.56 : x
  2. Step 2: Convert to fraction form
    165,612,378.43/228,541,145.66 = 90,261,085.56/x
  3. Step 3: Cross multiply
    165,612,378.43x = 228,541,145.66 × 90,261,085.56
  4. Step 4: Simplify right side
    165,612,378.43x = 20,628,371,901,427,828
  5. Step 5: Solve for x
    x = 20,628,371,901,427,828/165,612,378.43
  6. Step 6: Final answer
    x = 124,558,152.58

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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.