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Finding the Fourth Proportional to 121,763.31, 168,032.85 and 68,048.31

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Solution

The fourth proportional to 121,763.31, 168,032.85 and 68,048.31 is: 93,906.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,763.31 : 168,032.85 = 68,048.31 : x
  2. Step 2: Convert to fraction form
    121,763.31/168,032.85 = 68,048.31/x
  3. Step 3: Cross multiply
    121,763.31x = 168,032.85 × 68,048.31
  4. Step 4: Simplify right side
    121,763.31x = 11,434,351,466.98
  5. Step 5: Solve for x
    x = 11,434,351,466.98/121,763.31
  6. Step 6: Final answer
    x = 93,906.38

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1.5x scale

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.