Home / 122,207,871.62-168,650,059.08-66,456,552.72

Finding the Fourth Proportional to 122,207,871.62, 168,650,059.08 and 66,456,552.72

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Solution

The fourth proportional to 122,207,871.62, 168,650,059.08 and 66,456,552.72 is: 91,711,780.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,207,871.62 : 168,650,059.08 = 66,456,552.72 : x
  2. Step 2: Convert to fraction form
    122,207,871.62/168,650,059.08 = 66,456,552.72/x
  3. Step 3: Cross multiply
    122,207,871.62x = 168,650,059.08 × 66,456,552.72
  4. Step 4: Simplify right side
    122,207,871.62x = 11,207,901,542,039,978
  5. Step 5: Solve for x
    x = 11,207,901,542,039,978/122,207,871.62
  6. Step 6: Final answer
    x = 91,711,780.86

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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.