Home / 131,778.05-197,665.32-31,939.11

Finding the Fourth Proportional to 131,778.05, 197,665.32 and 31,939.11

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Solution

The fourth proportional to 131,778.05, 197,665.32 and 31,939.11 is: 47,908.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,778.05 : 197,665.32 = 31,939.11 : x
  2. Step 2: Convert to fraction form
    131,778.05/197,665.32 = 31,939.11/x
  3. Step 3: Cross multiply
    131,778.05x = 197,665.32 × 31,939.11
  4. Step 4: Simplify right side
    131,778.05x = 6,313,254,398.67
  5. Step 5: Solve for x
    x = 6,313,254,398.67/131,778.05
  6. Step 6: Final answer
    x = 47,908.24

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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.