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Finding the Fourth Proportional to 131,212.80, 196,684.80 and 64,550.40

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Solution

The fourth proportional to 131,212.80, 196,684.80 and 64,550.40 is: 96,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,212.80 : 196,684.80 = 64,550.40 : x
  2. Step 2: Convert to fraction form
    131,212.80/196,684.80 = 64,550.40/x
  3. Step 3: Cross multiply
    131,212.80x = 196,684.80 × 64,550.40
  4. Step 4: Simplify right side
    131,212.80x = 12,696,082,513.92
  5. Step 5: Solve for x
    x = 12,696,082,513.92/131,212.80
  6. Step 6: Final answer
    x = 96,759.48

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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.