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Finding the Fourth Proportional to 131,015.80, 196,523.70 and 83,776.60

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Solution

The fourth proportional to 131,015.80, 196,523.70 and 83,776.60 is: 125,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,015.80 : 196,523.70 = 83,776.60 : x
  2. Step 2: Convert to fraction form
    131,015.80/196,523.70 = 83,776.60/x
  3. Step 3: Cross multiply
    131,015.80x = 196,523.70 × 83,776.60
  4. Step 4: Simplify right side
    131,015.80x = 16,464,087,405.42
  5. Step 5: Solve for x
    x = 16,464,087,405.42/131,015.80
  6. Step 6: Final answer
    x = 125,664.90

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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.