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Finding the Fourth Proportional to 109,874.70, 164,812.05 and 87,324.30

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Solution

The fourth proportional to 109,874.70, 164,812.05 and 87,324.30 is: 130,986.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,874.70 : 164,812.05 = 87,324.30 : x
  2. Step 2: Convert to fraction form
    109,874.70/164,812.05 = 87,324.30/x
  3. Step 3: Cross multiply
    109,874.70x = 164,812.05 × 87,324.30
  4. Step 4: Simplify right side
    109,874.70x = 14,392,096,897.82
  5. Step 5: Solve for x
    x = 14,392,096,897.82/109,874.70
  6. Step 6: Final answer
    x = 130,986.45

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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.