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Finding the Fourth Proportional to 131,199.65, 196,854.81 and 64,640.33

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Solution

The fourth proportional to 131,199.65, 196,854.81 and 64,640.33 is: 96,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,199.65 : 196,854.81 = 64,640.33 : x
  2. Step 2: Convert to fraction form
    131,199.65/196,854.81 = 64,640.33/x
  3. Step 3: Cross multiply
    131,199.65x = 196,854.81 × 64,640.33
  4. Step 4: Simplify right side
    131,199.65x = 12,724,759,392.02
  5. Step 5: Solve for x
    x = 12,724,759,392.02/131,199.65
  6. Step 6: Final answer
    x = 96,987.76

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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.