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Finding the Fourth Proportional to 135,425.88, 203,187.40 and 60,539.76

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Solution

The fourth proportional to 135,425.88, 203,187.40 and 60,539.76 is: 90,831.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,425.88 : 203,187.40 = 60,539.76 : x
  2. Step 2: Convert to fraction form
    135,425.88/203,187.40 = 60,539.76/x
  3. Step 3: Cross multiply
    135,425.88x = 203,187.40 × 60,539.76
  4. Step 4: Simplify right side
    135,425.88x = 12,300,916,431.02
  5. Step 5: Solve for x
    x = 12,300,916,431.02/135,425.88
  6. Step 6: Final answer
    x = 90,831.36

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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.