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Finding the Fourth Proportional to 143,692.79, 198,294.08 and 80,031.04

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Solution

The fourth proportional to 143,692.79, 198,294.08 and 80,031.04 is: 110,441.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,692.79 : 198,294.08 = 80,031.04 : x
  2. Step 2: Convert to fraction form
    143,692.79/198,294.08 = 80,031.04/x
  3. Step 3: Cross multiply
    143,692.79x = 198,294.08 × 80,031.04
  4. Step 4: Simplify right side
    143,692.79x = 15,869,680,552.35
  5. Step 5: Solve for x
    x = 15,869,680,552.35/143,692.79
  6. Step 6: Final answer
    x = 110,441.74

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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.