Home / 131,718.80-181,773.78-74,361.36

Finding the Fourth Proportional to 131,718.80, 181,773.78 and 74,361.36

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Solution

The fourth proportional to 131,718.80, 181,773.78 and 74,361.36 is: 102,619.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,718.80 : 181,773.78 = 74,361.36 : x
  2. Step 2: Convert to fraction form
    131,718.80/181,773.78 = 74,361.36/x
  3. Step 3: Cross multiply
    131,718.80x = 181,773.78 × 74,361.36
  4. Step 4: Simplify right side
    131,718.80x = 13,516,945,493.14
  5. Step 5: Solve for x
    x = 13,516,945,493.14/131,718.80
  6. Step 6: Final answer
    x = 102,619.71

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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.