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Finding the Fourth Proportional to 189,090.59, 260,945.02 and 104,207.65

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Solution

The fourth proportional to 189,090.59, 260,945.02 and 104,207.65 is: 143,806.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,090.59 : 260,945.02 = 104,207.65 : x
  2. Step 2: Convert to fraction form
    189,090.59/260,945.02 = 104,207.65/x
  3. Step 3: Cross multiply
    189,090.59x = 260,945.02 × 104,207.65
  4. Step 4: Simplify right side
    189,090.59x = 27,192,466,791.30
  5. Step 5: Solve for x
    x = 27,192,466,791.30/189,090.59
  6. Step 6: Final answer
    x = 143,806.56

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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.