Home / 131,716.30-181,719.57-83,958.70

Finding the Fourth Proportional to 131,716.30, 181,719.57 and 83,958.70

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Solution

The fourth proportional to 131,716.30, 181,719.57 and 83,958.70 is: 115,831.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,716.30 : 181,719.57 = 83,958.70 : x
  2. Step 2: Convert to fraction form
    131,716.30/181,719.57 = 83,958.70/x
  3. Step 3: Cross multiply
    131,716.30x = 181,719.57 × 83,958.70
  4. Step 4: Simplify right side
    131,716.30x = 15,256,938,861.76
  5. Step 5: Solve for x
    x = 15,256,938,861.76/131,716.30
  6. Step 6: Final answer
    x = 115,831.82

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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.