Home / 143,770.60-198,401.70-80,108.20

Finding the Fourth Proportional to 143,770.60, 198,401.70 and 80,108.20

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Solution

The fourth proportional to 143,770.60, 198,401.70 and 80,108.20 is: 110,548.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,770.60 : 198,401.70 = 80,108.20 : x
  2. Step 2: Convert to fraction form
    143,770.60/198,401.70 = 80,108.20/x
  3. Step 3: Cross multiply
    143,770.60x = 198,401.70 × 80,108.20
  4. Step 4: Simplify right side
    143,770.60x = 15,893,603,063.94
  5. Step 5: Solve for x
    x = 15,893,603,063.94/143,770.60
  6. Step 6: Final answer
    x = 110,548.35

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1.5x scale

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.