Home / 118,205.15-163,122.30-67,217.87

Finding the Fourth Proportional to 118,205.15, 163,122.30 and 67,217.87

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Solution

The fourth proportional to 118,205.15, 163,122.30 and 67,217.87 is: 92,760.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,205.15 : 163,122.30 = 67,217.87 : x
  2. Step 2: Convert to fraction form
    118,205.15/163,122.30 = 67,217.87/x
  3. Step 3: Cross multiply
    118,205.15x = 163,122.30 × 67,217.87
  4. Step 4: Simplify right side
    118,205.15x = 10,964,732,739.89
  5. Step 5: Solve for x
    x = 10,964,732,739.89/118,205.15
  6. Step 6: Final answer
    x = 92,760.20

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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.