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Finding the Fourth Proportional to 143,432.67, 197,978.78 and 95,685.91

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Solution

The fourth proportional to 143,432.67, 197,978.78 and 95,685.91 is: 132,074.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,432.67 : 197,978.78 = 95,685.91 : x
  2. Step 2: Convert to fraction form
    143,432.67/197,978.78 = 95,685.91/x
  3. Step 3: Cross multiply
    143,432.67x = 197,978.78 × 95,685.91
  4. Step 4: Simplify right side
    143,432.67x = 18,943,779,469.26
  5. Step 5: Solve for x
    x = 18,943,779,469.26/143,432.67
  6. Step 6: Final answer
    x = 132,074.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.