Home / 73,321,910.40-109,982,865.60-72,188,169.60

Finding the Fourth Proportional to 73,321,910.40, 109,982,865.60 and 72,188,169.60

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Solution

The fourth proportional to 73,321,910.40, 109,982,865.60 and 72,188,169.60 is: 108,282,254.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,321,910.40 : 109,982,865.60 = 72,188,169.60 : x
  2. Step 2: Convert to fraction form
    73,321,910.40/109,982,865.60 = 72,188,169.60/x
  3. Step 3: Cross multiply
    73,321,910.40x = 109,982,865.60 × 72,188,169.60
  4. Step 4: Simplify right side
    73,321,910.40x = 7,939,461,755,026,805
  5. Step 5: Solve for x
    x = 7,939,461,755,026,805/73,321,910.40
  6. Step 6: Final answer
    x = 108,282,254.40

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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.