Home / 131,163.71-181,036.17-76,741.20

Finding the Fourth Proportional to 131,163.71, 181,036.17 and 76,741.20

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Solution

The fourth proportional to 131,163.71, 181,036.17 and 76,741.20 is: 105,920.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,163.71 : 181,036.17 = 76,741.20 : x
  2. Step 2: Convert to fraction form
    131,163.71/181,036.17 = 76,741.20/x
  3. Step 3: Cross multiply
    131,163.71x = 181,036.17 × 76,741.20
  4. Step 4: Simplify right side
    131,163.71x = 13,892,932,929.20
  5. Step 5: Solve for x
    x = 13,892,932,929.20/131,163.71
  6. Step 6: Final answer
    x = 105,920.56

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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.