Home / 115,431.20-172,855.20-92,103.20

Finding the Fourth Proportional to 115,431.20, 172,855.20 and 92,103.20

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Solution

The fourth proportional to 115,431.20, 172,855.20 and 92,103.20 is: 137,922.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,431.20 : 172,855.20 = 92,103.20 : x
  2. Step 2: Convert to fraction form
    115,431.20/172,855.20 = 92,103.20/x
  3. Step 3: Cross multiply
    115,431.20x = 172,855.20 × 92,103.20
  4. Step 4: Simplify right side
    115,431.20x = 15,920,517,056.64
  5. Step 5: Solve for x
    x = 15,920,517,056.64/115,431.20
  6. Step 6: Final answer
    x = 137,922.13

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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.