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Finding the Fourth Proportional to 144,080.40, 198,831.18 and 80,418.18

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Solution

The fourth proportional to 144,080.40, 198,831.18 and 80,418.18 is: 110,977.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,080.40 : 198,831.18 = 80,418.18 : x
  2. Step 2: Convert to fraction form
    144,080.40/198,831.18 = 80,418.18/x
  3. Step 3: Cross multiply
    144,080.40x = 198,831.18 × 80,418.18
  4. Step 4: Simplify right side
    144,080.40x = 15,989,641,622.85
  5. Step 5: Solve for x
    x = 15,989,641,622.85/144,080.40
  6. Step 6: Final answer
    x = 110,977.22

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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.