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Finding the Fourth Proportional to 142,412.22, 213,723.45 and 67,532.61

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Solution

The fourth proportional to 142,412.22, 213,723.45 and 67,532.61 is: 101,348.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,412.22 : 213,723.45 = 67,532.61 : x
  2. Step 2: Convert to fraction form
    142,412.22/213,723.45 = 67,532.61/x
  3. Step 3: Cross multiply
    142,412.22x = 213,723.45 × 67,532.61
  4. Step 4: Simplify right side
    142,412.22x = 14,433,302,396.70
  5. Step 5: Solve for x
    x = 14,433,302,396.70/142,412.22
  6. Step 6: Final answer
    x = 101,348.76

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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.