Home / 140,823-194,335.74-77,163.21

Finding the Fourth Proportional to 140,823, 194,335.74 and 77,163.21

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Solution

The fourth proportional to 140,823, 194,335.74 and 77,163.21 is: 106,485.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,823 : 194,335.74 = 77,163.21 : x
  2. Step 2: Convert to fraction form
    140,823/194,335.74 = 77,163.21/x
  3. Step 3: Cross multiply
    140,823x = 194,335.74 × 77,163.21
  4. Step 4: Simplify right side
    140,823x = 14,995,569,516.13
  5. Step 5: Solve for x
    x = 14,995,569,516.13/140,823
  6. Step 6: Final answer
    x = 106,485.23

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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.