Home / 131,169.68-181,012-74,579.84

Finding the Fourth Proportional to 131,169.68, 181,012 and 74,579.84

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Solution

The fourth proportional to 131,169.68, 181,012 and 74,579.84 is: 102,918.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,169.68 : 181,012 = 74,579.84 : x
  2. Step 2: Convert to fraction form
    131,169.68/181,012 = 74,579.84/x
  3. Step 3: Cross multiply
    131,169.68x = 181,012 × 74,579.84
  4. Step 4: Simplify right side
    131,169.68x = 13,499,845,998.08
  5. Step 5: Solve for x
    x = 13,499,845,998.08/131,169.68
  6. Step 6: Final answer
    x = 102,918.95

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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.