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Finding the Fourth Proportional to 131,264.40, 196,945.20 and 126,404.40

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Solution

The fourth proportional to 131,264.40, 196,945.20 and 126,404.40 is: 189,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,264.40 : 196,945.20 = 126,404.40 : x
  2. Step 2: Convert to fraction form
    131,264.40/196,945.20 = 126,404.40/x
  3. Step 3: Cross multiply
    131,264.40x = 196,945.20 × 126,404.40
  4. Step 4: Simplify right side
    131,264.40x = 24,894,739,838.88
  5. Step 5: Solve for x
    x = 24,894,739,838.88/131,264.40
  6. Step 6: Final answer
    x = 189,653.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.