Home / 122,207,959.20-168,650,179.96-66,456,640.22

Finding the Fourth Proportional to 122,207,959.20, 168,650,179.96 and 66,456,640.22

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Solution

The fourth proportional to 122,207,959.20, 168,650,179.96 and 66,456,640.22 is: 91,711,901.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,207,959.20 : 168,650,179.96 = 66,456,640.22 : x
  2. Step 2: Convert to fraction form
    122,207,959.20/168,650,179.96 = 66,456,640.22/x
  3. Step 3: Cross multiply
    122,207,959.20x = 168,650,179.96 × 66,456,640.22
  4. Step 4: Simplify right side
    122,207,959.20x = 11,207,924,332,639,974
  5. Step 5: Solve for x
    x = 11,207,924,332,639,974/122,207,959.20
  6. Step 6: Final answer
    x = 91,711,901.63

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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.