Home / 138,135.72-207,194.22-53,880.30

Finding the Fourth Proportional to 138,135.72, 207,194.22 and 53,880.30

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Solution

The fourth proportional to 138,135.72, 207,194.22 and 53,880.30 is: 80,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,135.72 : 207,194.22 = 53,880.30 : x
  2. Step 2: Convert to fraction form
    138,135.72/207,194.22 = 53,880.30/x
  3. Step 3: Cross multiply
    138,135.72x = 207,194.22 × 53,880.30
  4. Step 4: Simplify right side
    138,135.72x = 11,163,686,731.87
  5. Step 5: Solve for x
    x = 11,163,686,731.87/138,135.72
  6. Step 6: Final answer
    x = 80,816.80

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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.