Home / 138,665.80-207,998.70-133,222.60

Finding the Fourth Proportional to 138,665.80, 207,998.70 and 133,222.60

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Solution

The fourth proportional to 138,665.80, 207,998.70 and 133,222.60 is: 199,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,665.80 : 207,998.70 = 133,222.60 : x
  2. Step 2: Convert to fraction form
    138,665.80/207,998.70 = 133,222.60/x
  3. Step 3: Cross multiply
    138,665.80x = 207,998.70 × 133,222.60
  4. Step 4: Simplify right side
    138,665.80x = 27,710,127,610.62
  5. Step 5: Solve for x
    x = 27,710,127,610.62/138,665.80
  6. Step 6: Final answer
    x = 199,833.90

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1.5x scale

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.