Home / 143,770.84-198,403.26-80,109.40

Finding the Fourth Proportional to 143,770.84, 198,403.26 and 80,109.40

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Solution

The fourth proportional to 143,770.84, 198,403.26 and 80,109.40 is: 110,550.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,770.84 : 198,403.26 = 80,109.40 : x
  2. Step 2: Convert to fraction form
    143,770.84/198,403.26 = 80,109.40/x
  3. Step 3: Cross multiply
    143,770.84x = 198,403.26 × 80,109.40
  4. Step 4: Simplify right side
    143,770.84x = 15,893,966,116.64
  5. Step 5: Solve for x
    x = 15,893,966,116.64/143,770.84
  6. Step 6: Final answer
    x = 110,550.69

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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.