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Finding the Fourth Proportional to 121,920.58, 168,246.48 and 68,204.44

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Solution

The fourth proportional to 121,920.58, 168,246.48 and 68,204.44 is: 94,119.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,920.58 : 168,246.48 = 68,204.44 : x
  2. Step 2: Convert to fraction form
    121,920.58/168,246.48 = 68,204.44/x
  3. Step 3: Cross multiply
    121,920.58x = 168,246.48 × 68,204.44
  4. Step 4: Simplify right side
    121,920.58x = 11,475,156,950.37
  5. Step 5: Solve for x
    x = 11,475,156,950.37/121,920.58
  6. Step 6: Final answer
    x = 94,119.93

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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.