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Finding the Fourth Proportional to 101,388.54, 152,214.28 and 67,869.00

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Solution

The fourth proportional to 101,388.54, 152,214.28 and 67,869.00 is: 101,891.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,388.54 : 152,214.28 = 67,869.00 : x
  2. Step 2: Convert to fraction form
    101,388.54/152,214.28 = 67,869.00/x
  3. Step 3: Cross multiply
    101,388.54x = 152,214.28 × 67,869.00
  4. Step 4: Simplify right side
    101,388.54x = 10,330,631,370.45
  5. Step 5: Solve for x
    x = 10,330,631,370.45/101,388.54
  6. Step 6: Final answer
    x = 101,891.51

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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.