Home / 189,807.72-261,974.70-157,945.56

Finding the Fourth Proportional to 189,807.72, 261,974.70 and 157,945.56

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Solution

The fourth proportional to 189,807.72, 261,974.70 and 157,945.56 is: 217,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,807.72 : 261,974.70 = 157,945.56 : x
  2. Step 2: Convert to fraction form
    189,807.72/261,974.70 = 157,945.56/x
  3. Step 3: Cross multiply
    189,807.72x = 261,974.70 × 157,945.56
  4. Step 4: Simplify right side
    189,807.72x = 41,377,740,697.33
  5. Step 5: Solve for x
    x = 41,377,740,697.33/189,807.72
  6. Step 6: Final answer
    x = 217,998.20

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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.