Home / 131,171.68-181,014.76-74,581.84

Finding the Fourth Proportional to 131,171.68, 181,014.76 and 74,581.84

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Solution

The fourth proportional to 131,171.68, 181,014.76 and 74,581.84 is: 102,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,171.68 : 181,014.76 = 74,581.84 : x
  2. Step 2: Convert to fraction form
    131,171.68/181,014.76 = 74,581.84/x
  3. Step 3: Cross multiply
    131,171.68x = 181,014.76 × 74,581.84
  4. Step 4: Simplify right side
    131,171.68x = 13,500,413,867.96
  5. Step 5: Solve for x
    x = 13,500,413,867.96/131,171.68
  6. Step 6: Final answer
    x = 102,921.71

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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.