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Finding the Fourth Proportional to 189,392.88, 261,354.48 and 104,508.80

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Solution

The fourth proportional to 189,392.88, 261,354.48 and 104,508.80 is: 144,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,392.88 : 261,354.48 = 104,508.80 : x
  2. Step 2: Convert to fraction form
    189,392.88/261,354.48 = 104,508.80/x
  3. Step 3: Cross multiply
    189,392.88x = 261,354.48 × 104,508.80
  4. Step 4: Simplify right side
    189,392.88x = 27,313,843,079.42
  5. Step 5: Solve for x
    x = 27,313,843,079.42/189,392.88
  6. Step 6: Final answer
    x = 144,217.90

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1.5x scale

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.