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Finding the Fourth Proportional to 95,428.20, 143,142.30 and 83,764.20

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Solution

The fourth proportional to 95,428.20, 143,142.30 and 83,764.20 is: 125,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,428.20 : 143,142.30 = 83,764.20 : x
  2. Step 2: Convert to fraction form
    95,428.20/143,142.30 = 83,764.20/x
  3. Step 3: Cross multiply
    95,428.20x = 143,142.30 × 83,764.20
  4. Step 4: Simplify right side
    95,428.20x = 11,990,200,245.66
  5. Step 5: Solve for x
    x = 11,990,200,245.66/95,428.20
  6. Step 6: Final answer
    x = 125,646.30

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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.