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Finding the Fourth Proportional to 189,167.72, 261,053.20 and 104,287.82

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Solution

The fourth proportional to 189,167.72, 261,053.20 and 104,287.82 is: 143,918.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,167.72 : 261,053.20 = 104,287.82 : x
  2. Step 2: Convert to fraction form
    189,167.72/261,053.20 = 104,287.82/x
  3. Step 3: Cross multiply
    189,167.72x = 261,053.20 × 104,287.82
  4. Step 4: Simplify right side
    189,167.72x = 27,224,669,132.02
  5. Step 5: Solve for x
    x = 27,224,669,132.02/189,167.72
  6. Step 6: Final answer
    x = 143,918.15

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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.