Home / 122,147,621.22-168,564,845.79-66,393,172.78

Finding the Fourth Proportional to 122,147,621.22, 168,564,845.79 and 66,393,172.78

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Solution

The fourth proportional to 122,147,621.22, 168,564,845.79 and 66,393,172.78 is: 91,623,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,147,621.22 : 168,564,845.79 = 66,393,172.78 : x
  2. Step 2: Convert to fraction form
    122,147,621.22/168,564,845.79 = 66,393,172.78/x
  3. Step 3: Cross multiply
    122,147,621.22x = 168,564,845.79 × 66,393,172.78
  4. Step 4: Simplify right side
    122,147,621.22x = 11,191,554,930,499,140
  5. Step 5: Solve for x
    x = 11,191,554,930,499,140/122,147,621.22
  6. Step 6: Final answer
    x = 91,623,191.83

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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.