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Finding the Fourth Proportional to 121,766.34, 168,036.98 and 68,051.30

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Solution

The fourth proportional to 121,766.34, 168,036.98 and 68,051.30 is: 93,910.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,766.34 : 168,036.98 = 68,051.30 : x
  2. Step 2: Convert to fraction form
    121,766.34/168,036.98 = 68,051.30/x
  3. Step 3: Cross multiply
    121,766.34x = 168,036.98 × 68,051.30
  4. Step 4: Simplify right side
    121,766.34x = 11,435,134,937.07
  5. Step 5: Solve for x
    x = 11,435,134,937.07/121,766.34
  6. Step 6: Final answer
    x = 93,910.48

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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.