Home / 81,666,792,144.60-122,500,188,216.90-68,606,098,128.60

Finding the Fourth Proportional to 81,666,792,144.60, 122,500,188,216.90 and 68,606,098,128.60

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Solution

The fourth proportional to 81,666,792,144.60, 122,500,188,216.90 and 68,606,098,128.60 is: 102,909,147,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,666,792,144.60 : 122,500,188,216.90 = 68,606,098,128.60 : x
  2. Step 2: Convert to fraction form
    81,666,792,144.60/122,500,188,216.90 = 68,606,098,128.60/x
  3. Step 3: Cross multiply
    81,666,792,144.60x = 122,500,188,216.90 × 68,606,098,128.60
  4. Step 4: Simplify right side
    81,666,792,144.60x = 8,404,259,933,580,610,764,800
  5. Step 5: Solve for x
    x = 8,404,259,933,580,610,764,800/81,666,792,144.60
  6. Step 6: Final answer
    x = 102,909,147,192.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.