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Finding the Fourth Proportional to 135,881.76, 203,794.98 and 51,612.39

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Solution

The fourth proportional to 135,881.76, 203,794.98 and 51,612.39 is: 77,408.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,881.76 : 203,794.98 = 51,612.39 : x
  2. Step 2: Convert to fraction form
    135,881.76/203,794.98 = 51,612.39/x
  3. Step 3: Cross multiply
    135,881.76x = 203,794.98 × 51,612.39
  4. Step 4: Simplify right side
    135,881.76x = 10,518,345,987.80
  5. Step 5: Solve for x
    x = 10,518,345,987.80/135,881.76
  6. Step 6: Final answer
    x = 77,408.08

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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.