Home / 91,906,942.20-137,718,695.70-79,719,228.60

Finding the Fourth Proportional to 91,906,942.20, 137,718,695.70 and 79,719,228.60

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Solution

The fourth proportional to 91,906,942.20, 137,718,695.70 and 79,719,228.60 is: 119,455,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,906,942.20 : 137,718,695.70 = 79,719,228.60 : x
  2. Step 2: Convert to fraction form
    91,906,942.20/137,718,695.70 = 79,719,228.60/x
  3. Step 3: Cross multiply
    91,906,942.20x = 137,718,695.70 × 79,719,228.60
  4. Step 4: Simplify right side
    91,906,942.20x = 10,978,828,185,002,136
  5. Step 5: Solve for x
    x = 10,978,828,185,002,136/91,906,942.20
  6. Step 6: Final answer
    x = 119,455,918.37

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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.