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Finding the Fourth Proportional to 121,925.44, 168,265.11 and 68,219.74

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Solution

The fourth proportional to 121,925.44, 168,265.11 and 68,219.74 is: 94,147.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,925.44 : 168,265.11 = 68,219.74 : x
  2. Step 2: Convert to fraction form
    121,925.44/168,265.11 = 68,219.74/x
  3. Step 3: Cross multiply
    121,925.44x = 168,265.11 × 68,219.74
  4. Step 4: Simplify right side
    121,925.44x = 11,479,002,055.27
  5. Step 5: Solve for x
    x = 11,479,002,055.27/121,925.44
  6. Step 6: Final answer
    x = 94,147.72

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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.