Home / 140,639.32-194,074.78-76,964.80

Finding the Fourth Proportional to 140,639.32, 194,074.78 and 76,964.80

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Solution

The fourth proportional to 140,639.32, 194,074.78 and 76,964.80 is: 106,207.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,639.32 : 194,074.78 = 76,964.80 : x
  2. Step 2: Convert to fraction form
    140,639.32/194,074.78 = 76,964.80/x
  3. Step 3: Cross multiply
    140,639.32x = 194,074.78 × 76,964.80
  4. Step 4: Simplify right side
    140,639.32x = 14,936,926,627.74
  5. Step 5: Solve for x
    x = 14,936,926,627.74/140,639.32
  6. Step 6: Final answer
    x = 106,207.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.