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Finding the Fourth Proportional to 135,893.76, 203,833.44 and 42,388.80

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Solution

The fourth proportional to 135,893.76, 203,833.44 and 42,388.80 is: 63,580.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,893.76 : 203,833.44 = 42,388.80 : x
  2. Step 2: Convert to fraction form
    135,893.76/203,833.44 = 42,388.80/x
  3. Step 3: Cross multiply
    135,893.76x = 203,833.44 × 42,388.80
  4. Step 4: Simplify right side
    135,893.76x = 8,640,254,921.47
  5. Step 5: Solve for x
    x = 8,640,254,921.47/135,893.76
  6. Step 6: Final answer
    x = 63,580.95

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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.