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Finding the Fourth Proportional to 135,496.81, 203,255.30 and 40,719.41

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Solution

The fourth proportional to 135,496.81, 203,255.30 and 40,719.41 is: 61,082.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,496.81 : 203,255.30 = 40,719.41 : x
  2. Step 2: Convert to fraction form
    135,496.81/203,255.30 = 40,719.41/x
  3. Step 3: Cross multiply
    135,496.81x = 203,255.30 × 40,719.41
  4. Step 4: Simplify right side
    135,496.81x = 8,276,435,437.71
  5. Step 5: Solve for x
    x = 8,276,435,437.71/135,496.81
  6. Step 6: Final answer
    x = 61,082.14

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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.