Home / 141,861.50-195,770.21-78,201.57

Finding the Fourth Proportional to 141,861.50, 195,770.21 and 78,201.57

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Solution

The fourth proportional to 141,861.50, 195,770.21 and 78,201.57 is: 107,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,861.50 : 195,770.21 = 78,201.57 : x
  2. Step 2: Convert to fraction form
    141,861.50/195,770.21 = 78,201.57/x
  3. Step 3: Cross multiply
    141,861.50x = 195,770.21 × 78,201.57
  4. Step 4: Simplify right side
    141,861.50x = 15,309,537,781.23
  5. Step 5: Solve for x
    x = 15,309,537,781.23/141,861.50
  6. Step 6: Final answer
    x = 107,918.91

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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.