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Finding the Fourth Proportional to 135,889.80, 187,529.63 and 75,464.21

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Solution

The fourth proportional to 135,889.80, 187,529.63 and 75,464.21 is: 104,141.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,889.80 : 187,529.63 = 75,464.21 : x
  2. Step 2: Convert to fraction form
    135,889.80/187,529.63 = 75,464.21/x
  3. Step 3: Cross multiply
    135,889.80x = 187,529.63 × 75,464.21
  4. Step 4: Simplify right side
    135,889.80x = 14,151,774,064.57
  5. Step 5: Solve for x
    x = 14,151,774,064.57/135,889.80
  6. Step 6: Final answer
    x = 104,141.55

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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.