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Finding the Fourth Proportional to 147,589.60, 221,449.20 and 68,663.20

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Solution

The fourth proportional to 147,589.60, 221,449.20 and 68,663.20 is: 103,024.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,589.60 : 221,449.20 = 68,663.20 : x
  2. Step 2: Convert to fraction form
    147,589.60/221,449.20 = 68,663.20/x
  3. Step 3: Cross multiply
    147,589.60x = 221,449.20 × 68,663.20
  4. Step 4: Simplify right side
    147,589.60x = 15,205,410,709.44
  5. Step 5: Solve for x
    x = 15,205,410,709.44/147,589.60
  6. Step 6: Final answer
    x = 103,024.95

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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.