Home / 144,072.11-198,838.32-80,423.12

Finding the Fourth Proportional to 144,072.11, 198,838.32 and 80,423.12

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Solution

The fourth proportional to 144,072.11, 198,838.32 and 80,423.12 is: 110,994.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,072.11 : 198,838.32 = 80,423.12 : x
  2. Step 2: Convert to fraction form
    144,072.11/198,838.32 = 80,423.12/x
  3. Step 3: Cross multiply
    144,072.11x = 198,838.32 × 80,423.12
  4. Step 4: Simplify right side
    144,072.11x = 15,991,198,069.96
  5. Step 5: Solve for x
    x = 15,991,198,069.96/144,072.11
  6. Step 6: Final answer
    x = 110,994.40

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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.