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Finding the Fourth Proportional to 135,960.70, 187,622.40 and 75,531.50

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Solution

The fourth proportional to 135,960.70, 187,622.40 and 75,531.50 is: 104,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,960.70 : 187,622.40 = 75,531.50 : x
  2. Step 2: Convert to fraction form
    135,960.70/187,622.40 = 75,531.50/x
  3. Step 3: Cross multiply
    135,960.70x = 187,622.40 × 75,531.50
  4. Step 4: Simplify right side
    135,960.70x = 14,171,401,305.60
  5. Step 5: Solve for x
    x = 14,171,401,305.60/135,960.70
  6. Step 6: Final answer
    x = 104,231.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.