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Finding the Fourth Proportional to 95,415.20, 143,000.40 and 53,295.20

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Solution

The fourth proportional to 95,415.20, 143,000.40 and 53,295.20 is: 79,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,415.20 : 143,000.40 = 53,295.20 : x
  2. Step 2: Convert to fraction form
    95,415.20/143,000.40 = 53,295.20/x
  3. Step 3: Cross multiply
    95,415.20x = 143,000.40 × 53,295.20
  4. Step 4: Simplify right side
    95,415.20x = 7,621,234,918.08
  5. Step 5: Solve for x
    x = 7,621,234,918.08/95,415.20
  6. Step 6: Final answer
    x = 79,874.43

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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.