Home / 68,194.20-102,288.89-20,807.38

Finding the Fourth Proportional to 68,194.20, 102,288.89 and 20,807.38

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Solution

The fourth proportional to 68,194.20, 102,288.89 and 20,807.38 is: 31,210.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,194.20 : 102,288.89 = 20,807.38 : x
  2. Step 2: Convert to fraction form
    68,194.20/102,288.89 = 20,807.38/x
  3. Step 3: Cross multiply
    68,194.20x = 102,288.89 × 20,807.38
  4. Step 4: Simplify right side
    68,194.20x = 2,128,363,983.89
  5. Step 5: Solve for x
    x = 2,128,363,983.89/68,194.20
  6. Step 6: Final answer
    x = 31,210.34

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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.