Home / 138,192.72-206,137.80-135,906.36

Finding the Fourth Proportional to 138,192.72, 206,137.80 and 135,906.36

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Solution

The fourth proportional to 138,192.72, 206,137.80 and 135,906.36 is: 202,727.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,192.72 : 206,137.80 = 135,906.36 : x
  2. Step 2: Convert to fraction form
    138,192.72/206,137.80 = 135,906.36/x
  3. Step 3: Cross multiply
    138,192.72x = 206,137.80 × 135,906.36
  4. Step 4: Simplify right side
    138,192.72x = 28,015,438,056.41
  5. Step 5: Solve for x
    x = 28,015,438,056.41/138,192.72
  6. Step 6: Final answer
    x = 202,727.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.