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Finding the Fourth Proportional to 95,435.20, 143,152.80 and 82,021.60

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Solution

The fourth proportional to 95,435.20, 143,152.80 and 82,021.60 is: 123,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,435.20 : 143,152.80 = 82,021.60 : x
  2. Step 2: Convert to fraction form
    95,435.20/143,152.80 = 82,021.60/x
  3. Step 3: Cross multiply
    95,435.20x = 143,152.80 × 82,021.60
  4. Step 4: Simplify right side
    95,435.20x = 11,741,621,700.48
  5. Step 5: Solve for x
    x = 11,741,621,700.48/95,435.20
  6. Step 6: Final answer
    x = 123,032.40

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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.