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Finding the Fourth Proportional to 135,958.70, 187,619.64 and 75,529.50

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Solution

The fourth proportional to 135,958.70, 187,619.64 and 75,529.50 is: 104,228.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,958.70 : 187,619.64 = 75,529.50 : x
  2. Step 2: Convert to fraction form
    135,958.70/187,619.64 = 75,529.50/x
  3. Step 3: Cross multiply
    135,958.70x = 187,619.64 × 75,529.50
  4. Step 4: Simplify right side
    135,958.70x = 14,170,817,599.38
  5. Step 5: Solve for x
    x = 14,170,817,599.38/135,958.70
  6. Step 6: Final answer
    x = 104,228.84

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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.