Home / 118,669.78-163,768.26-67,690

Finding the Fourth Proportional to 118,669.78, 163,768.26 and 67,690

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Solution

The fourth proportional to 118,669.78, 163,768.26 and 67,690 is: 93,414.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,669.78 : 163,768.26 = 67,690 : x
  2. Step 2: Convert to fraction form
    118,669.78/163,768.26 = 67,690/x
  3. Step 3: Cross multiply
    118,669.78x = 163,768.26 × 67,690
  4. Step 4: Simplify right side
    118,669.78x = 11,085,473,519.40
  5. Step 5: Solve for x
    x = 11,085,473,519.40/118,669.78
  6. Step 6: Final answer
    x = 93,414.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.