Home / 186,012.48-279,120-80,831.04

Finding the Fourth Proportional to 186,012.48, 279,120 and 80,831.04

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Solution

The fourth proportional to 186,012.48, 279,120 and 80,831.04 is: 121,290.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,012.48 : 279,120 = 80,831.04 : x
  2. Step 2: Convert to fraction form
    186,012.48/279,120 = 80,831.04/x
  3. Step 3: Cross multiply
    186,012.48x = 279,120 × 80,831.04
  4. Step 4: Simplify right side
    186,012.48x = 22,561,559,884.80
  5. Step 5: Solve for x
    x = 22,561,559,884.80/186,012.48
  6. Step 6: Final answer
    x = 121,290.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.