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Finding the Fourth Proportional to 189,493.65, 261,499.59 and 104,608.89

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Solution

The fourth proportional to 189,493.65, 261,499.59 and 104,608.89 is: 144,359.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,493.65 : 261,499.59 = 104,608.89 : x
  2. Step 2: Convert to fraction form
    189,493.65/261,499.59 = 104,608.89/x
  3. Step 3: Cross multiply
    189,493.65x = 261,499.59 × 104,608.89
  4. Step 4: Simplify right side
    189,493.65x = 27,355,181,845.36
  5. Step 5: Solve for x
    x = 27,355,181,845.36/189,493.65
  6. Step 6: Final answer
    x = 144,359.36

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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.