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Finding the Fourth Proportional to 189,178.90, 261,068.66 and 104,299

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Solution

The fourth proportional to 189,178.90, 261,068.66 and 104,299 is: 143,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,178.90 : 261,068.66 = 104,299 : x
  2. Step 2: Convert to fraction form
    189,178.90/261,068.66 = 104,299/x
  3. Step 3: Cross multiply
    189,178.90x = 261,068.66 × 104,299
  4. Step 4: Simplify right side
    189,178.90x = 27,229,200,169.34
  5. Step 5: Solve for x
    x = 27,229,200,169.34/189,178.90
  6. Step 6: Final answer
    x = 143,933.60

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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.