Home / 68,121.07-102,198.89-21,374.35

Finding the Fourth Proportional to 68,121.07, 102,198.89 and 21,374.35

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Solution

The fourth proportional to 68,121.07, 102,198.89 and 21,374.35 is: 32,066.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,121.07 : 102,198.89 = 21,374.35 : x
  2. Step 2: Convert to fraction form
    68,121.07/102,198.89 = 21,374.35/x
  3. Step 3: Cross multiply
    68,121.07x = 102,198.89 × 21,374.35
  4. Step 4: Simplify right side
    68,121.07x = 2,184,434,737.60
  5. Step 5: Solve for x
    x = 2,184,434,737.60/68,121.07
  6. Step 6: Final answer
    x = 32,066.95

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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.