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Finding the Fourth Proportional to 144,079.11, 198,828.95 and 80,416.89

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Solution

The fourth proportional to 144,079.11, 198,828.95 and 80,416.89 is: 110,975.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,079.11 : 198,828.95 = 80,416.89 : x
  2. Step 2: Convert to fraction form
    144,079.11/198,828.95 = 80,416.89/x
  3. Step 3: Cross multiply
    144,079.11x = 198,828.95 × 80,416.89
  4. Step 4: Simplify right side
    144,079.11x = 15,989,205,398.88
  5. Step 5: Solve for x
    x = 15,989,205,398.88/144,079.11
  6. Step 6: Final answer
    x = 110,975.18

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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.