Home / 131,980.42-181,961.67-84,150.73

Finding the Fourth Proportional to 131,980.42, 181,961.67 and 84,150.73

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Solution

The fourth proportional to 131,980.42, 181,961.67 and 84,150.73 is: 116,018.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,980.42 : 181,961.67 = 84,150.73 : x
  2. Step 2: Convert to fraction form
    131,980.42/181,961.67 = 84,150.73/x
  3. Step 3: Cross multiply
    131,980.42x = 181,961.67 × 84,150.73
  4. Step 4: Simplify right side
    131,980.42x = 15,312,207,362.52
  5. Step 5: Solve for x
    x = 15,312,207,362.52/131,980.42
  6. Step 6: Final answer
    x = 116,018.78

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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.