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Finding the Fourth Proportional to 128,011.96, 192,017.88 and 34,517.71

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Solution

The fourth proportional to 128,011.96, 192,017.88 and 34,517.71 is: 51,776.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,011.96 : 192,017.88 = 34,517.71 : x
  2. Step 2: Convert to fraction form
    128,011.96/192,017.88 = 34,517.71/x
  3. Step 3: Cross multiply
    128,011.96x = 192,017.88 × 34,517.71
  4. Step 4: Simplify right side
    128,011.96x = 6,628,017,496.65
  5. Step 5: Solve for x
    x = 6,628,017,496.65/128,011.96
  6. Step 6: Final answer
    x = 51,776.55

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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.