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Finding the Fourth Proportional to 189,167.58, 261,053.28 and 104,287.68

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Solution

The fourth proportional to 189,167.58, 261,053.28 and 104,287.68 is: 143,918.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,167.58 : 261,053.28 = 104,287.68 : x
  2. Step 2: Convert to fraction form
    189,167.58/261,053.28 = 104,287.68/x
  3. Step 3: Cross multiply
    189,167.58x = 261,053.28 × 104,287.68
  4. Step 4: Simplify right side
    189,167.58x = 27,224,640,927.59
  5. Step 5: Solve for x
    x = 27,224,640,927.59/189,167.58
  6. Step 6: Final answer
    x = 143,918.11

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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.