Home / 140,667.49-194,121.66-77,011.21

Finding the Fourth Proportional to 140,667.49, 194,121.66 and 77,011.21

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Solution

The fourth proportional to 140,667.49, 194,121.66 and 77,011.21 is: 106,275.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,667.49 : 194,121.66 = 77,011.21 : x
  2. Step 2: Convert to fraction form
    140,667.49/194,121.66 = 77,011.21/x
  3. Step 3: Cross multiply
    140,667.49x = 194,121.66 × 77,011.21
  4. Step 4: Simplify right side
    140,667.49x = 14,949,543,923.81
  5. Step 5: Solve for x
    x = 14,949,543,923.81/140,667.49
  6. Step 6: Final answer
    x = 106,275.76

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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.