Home / 81,666,792,139.60-122,500,188,209.40-68,606,098,123.60

Finding the Fourth Proportional to 81,666,792,139.60, 122,500,188,209.40 and 68,606,098,123.60

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Solution

The fourth proportional to 81,666,792,139.60, 122,500,188,209.40 and 68,606,098,123.60 is: 102,909,147,185.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,666,792,139.60 : 122,500,188,209.40 = 68,606,098,123.60 : x
  2. Step 2: Convert to fraction form
    81,666,792,139.60/122,500,188,209.40 = 68,606,098,123.60/x
  3. Step 3: Cross multiply
    81,666,792,139.60x = 122,500,188,209.40 × 68,606,098,123.60
  4. Step 4: Simplify right side
    81,666,792,139.60x = 8,404,259,932,453,563,531,264
  5. Step 5: Solve for x
    x = 8,404,259,932,453,563,531,264/81,666,792,139.60
  6. Step 6: Final answer
    x = 102,909,147,185.40

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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.