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Finding the Fourth Proportional to 135,046.60, 202,407.90 and 56,120.20

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Solution

The fourth proportional to 135,046.60, 202,407.90 and 56,120.20 is: 84,112.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,046.60 : 202,407.90 = 56,120.20 : x
  2. Step 2: Convert to fraction form
    135,046.60/202,407.90 = 56,120.20/x
  3. Step 3: Cross multiply
    135,046.60x = 202,407.90 × 56,120.20
  4. Step 4: Simplify right side
    135,046.60x = 11,359,171,829.58
  5. Step 5: Solve for x
    x = 11,359,171,829.58/135,046.60
  6. Step 6: Final answer
    x = 84,112.98

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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.