Home / 142,404.20-213,759.90-80,196.20

Finding the Fourth Proportional to 142,404.20, 213,759.90 and 80,196.20

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Solution

The fourth proportional to 142,404.20, 213,759.90 and 80,196.20 is: 120,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,404.20 : 213,759.90 = 80,196.20 : x
  2. Step 2: Convert to fraction form
    142,404.20/213,759.90 = 80,196.20/x
  3. Step 3: Cross multiply
    142,404.20x = 213,759.90 × 80,196.20
  4. Step 4: Simplify right side
    142,404.20x = 17,142,731,692.38
  5. Step 5: Solve for x
    x = 17,142,731,692.38/142,404.20
  6. Step 6: Final answer
    x = 120,380.80

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1.5x scale

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.