Home / 68,124.12-102,198.39-28,143.10

Finding the Fourth Proportional to 68,124.12, 102,198.39 and 28,143.10

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Solution

The fourth proportional to 68,124.12, 102,198.39 and 28,143.10 is: 42,219.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,124.12 : 102,198.39 = 28,143.10 : x
  2. Step 2: Convert to fraction form
    68,124.12/102,198.39 = 28,143.10/x
  3. Step 3: Cross multiply
    68,124.12x = 102,198.39 × 28,143.10
  4. Step 4: Simplify right side
    68,124.12x = 2,876,179,509.61
  5. Step 5: Solve for x
    x = 2,876,179,509.61/68,124.12
  6. Step 6: Final answer
    x = 42,219.69

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1.5x scale

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.