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Finding the Fourth Proportional to 163,891.74, 245,954.25 and 126,489.18

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Solution

The fourth proportional to 163,891.74, 245,954.25 and 126,489.18 is: 189,823.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,891.74 : 245,954.25 = 126,489.18 : x
  2. Step 2: Convert to fraction form
    163,891.74/245,954.25 = 126,489.18/x
  3. Step 3: Cross multiply
    163,891.74x = 245,954.25 × 126,489.18
  4. Step 4: Simplify right side
    163,891.74x = 31,110,551,400.02
  5. Step 5: Solve for x
    x = 31,110,551,400.02/163,891.74
  6. Step 6: Final answer
    x = 189,823.79

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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.