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Finding the Fourth Proportional to 189,080.79, 260,919.12 and 104,197.83

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Solution

The fourth proportional to 189,080.79, 260,919.12 and 104,197.83 is: 143,786.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,080.79 : 260,919.12 = 104,197.83 : x
  2. Step 2: Convert to fraction form
    189,080.79/260,919.12 = 104,197.83/x
  3. Step 3: Cross multiply
    189,080.79x = 260,919.12 × 104,197.83
  4. Step 4: Simplify right side
    189,080.79x = 27,187,206,109.51
  5. Step 5: Solve for x
    x = 27,187,206,109.51/189,080.79
  6. Step 6: Final answer
    x = 143,786.19

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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.