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Finding the Fourth Proportional to 103,602.56, 142,991.94 and 67,348.92

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Solution

The fourth proportional to 103,602.56, 142,991.94 and 67,348.92 is: 92,954.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,602.56 : 142,991.94 = 67,348.92 : x
  2. Step 2: Convert to fraction form
    103,602.56/142,991.94 = 67,348.92/x
  3. Step 3: Cross multiply
    103,602.56x = 142,991.94 × 67,348.92
  4. Step 4: Simplify right side
    103,602.56x = 9,630,352,727.70
  5. Step 5: Solve for x
    x = 9,630,352,727.70/103,602.56
  6. Step 6: Final answer
    x = 92,954.78

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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.