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Finding the Fourth Proportional to 121,760.33, 168,032.86 and 68,045.49

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Solution

The fourth proportional to 121,760.33, 168,032.86 and 68,045.49 is: 93,904.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,760.33 : 168,032.86 = 68,045.49 : x
  2. Step 2: Convert to fraction form
    121,760.33/168,032.86 = 68,045.49/x
  3. Step 3: Cross multiply
    121,760.33x = 168,032.86 × 68,045.49
  4. Step 4: Simplify right side
    121,760.33x = 11,433,878,124.69
  5. Step 5: Solve for x
    x = 11,433,878,124.69/121,760.33
  6. Step 6: Final answer
    x = 93,904.79

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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.