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Finding the Fourth Proportional to 109,874.53, 151,583.97 and 71,678.98

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Solution

The fourth proportional to 109,874.53, 151,583.97 and 71,678.98 is: 98,889.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,874.53 : 151,583.97 = 71,678.98 : x
  2. Step 2: Convert to fraction form
    109,874.53/151,583.97 = 71,678.98/x
  3. Step 3: Cross multiply
    109,874.53x = 151,583.97 × 71,678.98
  4. Step 4: Simplify right side
    109,874.53x = 10,865,384,353.95
  5. Step 5: Solve for x
    x = 10,865,384,353.95/109,874.53
  6. Step 6: Final answer
    x = 98,889.02

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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.