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Finding the Fourth Proportional to 189,072.60, 260,921.92 and 104,192.68

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Solution

The fourth proportional to 189,072.60, 260,921.92 and 104,192.68 is: 143,786.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,072.60 : 260,921.92 = 104,192.68 : x
  2. Step 2: Convert to fraction form
    189,072.60/260,921.92 = 104,192.68/x
  3. Step 3: Cross multiply
    189,072.60x = 260,921.92 × 104,192.68
  4. Step 4: Simplify right side
    189,072.60x = 27,186,154,115.55
  5. Step 5: Solve for x
    x = 27,186,154,115.55/189,072.60
  6. Step 6: Final answer
    x = 143,786.85

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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.