Home / 136,291.87-188,082.78-75,861.21

Finding the Fourth Proportional to 136,291.87, 188,082.78 and 75,861.21

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Solution

The fourth proportional to 136,291.87, 188,082.78 and 75,861.21 is: 104,688.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,291.87 : 188,082.78 = 75,861.21 : x
  2. Step 2: Convert to fraction form
    136,291.87/188,082.78 = 75,861.21/x
  3. Step 3: Cross multiply
    136,291.87x = 188,082.78 × 75,861.21
  4. Step 4: Simplify right side
    136,291.87x = 14,268,188,260.75
  5. Step 5: Solve for x
    x = 14,268,188,260.75/136,291.87
  6. Step 6: Final answer
    x = 104,688.48

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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.