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Finding the Fourth Proportional to 135,975.60, 203,893.36 and 61,031.50

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Solution

The fourth proportional to 135,975.60, 203,893.36 and 61,031.50 is: 91,515.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,975.60 : 203,893.36 = 61,031.50 : x
  2. Step 2: Convert to fraction form
    135,975.60/203,893.36 = 61,031.50/x
  3. Step 3: Cross multiply
    135,975.60x = 203,893.36 × 61,031.50
  4. Step 4: Simplify right side
    135,975.60x = 12,443,917,600.84
  5. Step 5: Solve for x
    x = 12,443,917,600.84/135,975.60
  6. Step 6: Final answer
    x = 91,515.81

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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.