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Finding the Fourth Proportional to 135,959.70, 187,621.02 and 75,530.50

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Solution

The fourth proportional to 135,959.70, 187,621.02 and 75,530.50 is: 104,230.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,959.70 : 187,621.02 = 75,530.50 : x
  2. Step 2: Convert to fraction form
    135,959.70/187,621.02 = 75,530.50/x
  3. Step 3: Cross multiply
    135,959.70x = 187,621.02 × 75,530.50
  4. Step 4: Simplify right side
    135,959.70x = 14,171,109,451.11
  5. Step 5: Solve for x
    x = 14,171,109,451.11/135,959.70
  6. Step 6: Final answer
    x = 104,230.22

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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.