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Finding the Fourth Proportional to 135,602.60, 203,401.72 and 42,108.44

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Solution

The fourth proportional to 135,602.60, 203,401.72 and 42,108.44 is: 63,161.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,602.60 : 203,401.72 = 42,108.44 : x
  2. Step 2: Convert to fraction form
    135,602.60/203,401.72 = 42,108.44/x
  3. Step 3: Cross multiply
    135,602.60x = 203,401.72 × 42,108.44
  4. Step 4: Simplify right side
    135,602.60x = 8,564,929,122.52
  5. Step 5: Solve for x
    x = 8,564,929,122.52/135,602.60
  6. Step 6: Final answer
    x = 63,161.98

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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.