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Finding the Fourth Proportional to 131,452.60, 196,725.30 and 78,899.80

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Solution

The fourth proportional to 131,452.60, 196,725.30 and 78,899.80 is: 118,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,452.60 : 196,725.30 = 78,899.80 : x
  2. Step 2: Convert to fraction form
    131,452.60/196,725.30 = 78,899.80/x
  3. Step 3: Cross multiply
    131,452.60x = 196,725.30 × 78,899.80
  4. Step 4: Simplify right side
    131,452.60x = 15,521,586,824.94
  5. Step 5: Solve for x
    x = 15,521,586,824.94/131,452.60
  6. Step 6: Final answer
    x = 118,077.44

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1.5x scale

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.