Home / 80,951.40-121,427.10-79,396.20

Finding the Fourth Proportional to 80,951.40, 121,427.10 and 79,396.20

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Solution

The fourth proportional to 80,951.40, 121,427.10 and 79,396.20 is: 119,094.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,951.40 : 121,427.10 = 79,396.20 : x
  2. Step 2: Convert to fraction form
    80,951.40/121,427.10 = 79,396.20/x
  3. Step 3: Cross multiply
    80,951.40x = 121,427.10 × 79,396.20
  4. Step 4: Simplify right side
    80,951.40x = 9,640,850,317.02
  5. Step 5: Solve for x
    x = 9,640,850,317.02/80,951.40
  6. Step 6: Final answer
    x = 119,094.30

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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.