Home / 129,795.10-194,692.65-79,712.80

Finding the Fourth Proportional to 129,795.10, 194,692.65 and 79,712.80

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Solution

The fourth proportional to 129,795.10, 194,692.65 and 79,712.80 is: 119,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,795.10 : 194,692.65 = 79,712.80 : x
  2. Step 2: Convert to fraction form
    129,795.10/194,692.65 = 79,712.80/x
  3. Step 3: Cross multiply
    129,795.10x = 194,692.65 × 79,712.80
  4. Step 4: Simplify right side
    129,795.10x = 15,519,496,270.92
  5. Step 5: Solve for x
    x = 15,519,496,270.92/129,795.10
  6. Step 6: Final answer
    x = 119,569.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.