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Finding the Fourth Proportional to 163,963.94, 245,945.93 and 126,578.58

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Solution

The fourth proportional to 163,963.94, 245,945.93 and 126,578.58 is: 189,867.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,963.94 : 245,945.93 = 126,578.58 : x
  2. Step 2: Convert to fraction form
    163,963.94/245,945.93 = 126,578.58/x
  3. Step 3: Cross multiply
    163,963.94x = 245,945.93 × 126,578.58
  4. Step 4: Simplify right side
    163,963.94x = 31,131,485,943.29
  5. Step 5: Solve for x
    x = 31,131,485,943.29/163,963.94
  6. Step 6: Final answer
    x = 189,867.89

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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.