Home / 143,769.84-198,401.88-80,108.40

Finding the Fourth Proportional to 143,769.84, 198,401.88 and 80,108.40

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Solution

The fourth proportional to 143,769.84, 198,401.88 and 80,108.40 is: 110,549.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,769.84 : 198,401.88 = 80,108.40 : x
  2. Step 2: Convert to fraction form
    143,769.84/198,401.88 = 80,108.40/x
  3. Step 3: Cross multiply
    143,769.84x = 198,401.88 × 80,108.40
  4. Step 4: Simplify right side
    143,769.84x = 15,893,657,163.79
  5. Step 5: Solve for x
    x = 15,893,657,163.79/143,769.84
  6. Step 6: Final answer
    x = 110,549.31

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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.