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Finding the Fourth Proportional to 103,543.44, 142,819.70 and 67,179.92

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Solution

The fourth proportional to 103,543.44, 142,819.70 and 67,179.92 is: 92,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,543.44 : 142,819.70 = 67,179.92 : x
  2. Step 2: Convert to fraction form
    103,543.44/142,819.70 = 67,179.92/x
  3. Step 3: Cross multiply
    103,543.44x = 142,819.70 × 67,179.92
  4. Step 4: Simplify right side
    103,543.44x = 9,594,616,045.31
  5. Step 5: Solve for x
    x = 9,594,616,045.31/103,543.44
  6. Step 6: Final answer
    x = 92,662.71

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1.5x scale

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.