Home / 138,997,739.58-191,816,905.50-77,117,930.52

Finding the Fourth Proportional to 138,997,739.58, 191,816,905.50 and 77,117,930.52

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Solution

The fourth proportional to 138,997,739.58, 191,816,905.50 and 77,117,930.52 is: 106,422,757.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,997,739.58 : 191,816,905.50 = 77,117,930.52 : x
  2. Step 2: Convert to fraction form
    138,997,739.58/191,816,905.50 = 77,117,930.52/x
  3. Step 3: Cross multiply
    138,997,739.58x = 191,816,905.50 × 77,117,930.52
  4. Step 4: Simplify right side
    138,997,739.58x = 14,792,522,790,910,406
  5. Step 5: Solve for x
    x = 14,792,522,790,910,406/138,997,739.58
  6. Step 6: Final answer
    x = 106,422,757.92

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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.