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Finding the Fourth Proportional to 189,159.71, 261,042.14 and 104,279.81

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Solution

The fourth proportional to 189,159.71, 261,042.14 and 104,279.81 is: 143,907.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,159.71 : 261,042.14 = 104,279.81 : x
  2. Step 2: Convert to fraction form
    189,159.71/261,042.14 = 104,279.81/x
  3. Step 3: Cross multiply
    189,159.71x = 261,042.14 × 104,279.81
  4. Step 4: Simplify right side
    189,159.71x = 27,221,423,716.68
  5. Step 5: Solve for x
    x = 27,221,423,716.68/189,159.71
  6. Step 6: Final answer
    x = 143,907.10

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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.