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Finding the Fourth Proportional to 189,131.76, 260,996.85 and 104,249.16

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Solution

The fourth proportional to 189,131.76, 260,996.85 and 104,249.16 is: 143,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,131.76 : 260,996.85 = 104,249.16 : x
  2. Step 2: Convert to fraction form
    189,131.76/260,996.85 = 104,249.16/x
  3. Step 3: Cross multiply
    189,131.76x = 260,996.85 × 104,249.16
  4. Step 4: Simplify right side
    189,131.76x = 27,208,702,375.15
  5. Step 5: Solve for x
    x = 27,208,702,375.15/189,131.76
  6. Step 6: Final answer
    x = 143,861.10

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1.5x scale

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.