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Finding the Fourth Proportional to 135,878.60, 203,897.28 and 56,986.22

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Solution

The fourth proportional to 135,878.60, 203,897.28 and 56,986.22 is: 85,512.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,878.60 : 203,897.28 = 56,986.22 : x
  2. Step 2: Convert to fraction form
    135,878.60/203,897.28 = 56,986.22/x
  3. Step 3: Cross multiply
    135,878.60x = 203,897.28 × 56,986.22
  4. Step 4: Simplify right side
    135,878.60x = 11,619,335,255.48
  5. Step 5: Solve for x
    x = 11,619,335,255.48/135,878.60
  6. Step 6: Final answer
    x = 85,512.62

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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.