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Finding the Fourth Proportional to 128,992.41, 193,489.70 and 35,503.29

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Solution

The fourth proportional to 128,992.41, 193,489.70 and 35,503.29 is: 53,255.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,992.41 : 193,489.70 = 35,503.29 : x
  2. Step 2: Convert to fraction form
    128,992.41/193,489.70 = 35,503.29/x
  3. Step 3: Cross multiply
    128,992.41x = 193,489.70 × 35,503.29
  4. Step 4: Simplify right side
    128,992.41x = 6,869,520,753.60
  5. Step 5: Solve for x
    x = 6,869,520,753.60/128,992.41
  6. Step 6: Final answer
    x = 53,255.23

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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.