Home / 81,666,792,145.60-122,500,188,218.40-68,606,098,129.60

Finding the Fourth Proportional to 81,666,792,145.60, 122,500,188,218.40 and 68,606,098,129.60

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Solution

The fourth proportional to 81,666,792,145.60, 122,500,188,218.40 and 68,606,098,129.60 is: 102,909,147,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,666,792,145.60 : 122,500,188,218.40 = 68,606,098,129.60 : x
  2. Step 2: Convert to fraction form
    81,666,792,145.60/122,500,188,218.40 = 68,606,098,129.60/x
  3. Step 3: Cross multiply
    81,666,792,145.60x = 122,500,188,218.40 × 68,606,098,129.60
  4. Step 4: Simplify right side
    81,666,792,145.60x = 8,404,259,933,806,020,001,792
  5. Step 5: Solve for x
    x = 8,404,259,933,806,020,001,792/81,666,792,145.60
  6. Step 6: Final answer
    x = 102,909,147,194.40

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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.