Home / 257,825.45-386,342.60-107,983.76

Finding the Fourth Proportional to 257,825.45, 386,342.60 and 107,983.76

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Solution

The fourth proportional to 257,825.45, 386,342.60 and 107,983.76 is: 161,809.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,825.45 : 386,342.60 = 107,983.76 : x
  2. Step 2: Convert to fraction form
    257,825.45/386,342.60 = 107,983.76/x
  3. Step 3: Cross multiply
    257,825.45x = 386,342.60 × 107,983.76
  4. Step 4: Simplify right side
    257,825.45x = 41,718,724,124.54
  5. Step 5: Solve for x
    x = 41,718,724,124.54/257,825.45
  6. Step 6: Final answer
    x = 161,809.95

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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.