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Finding the Fourth Proportional to 194,718.60, 268,713.72 and 108,685.80

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Solution

The fourth proportional to 194,718.60, 268,713.72 and 108,685.80 is: 149,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,718.60 : 268,713.72 = 108,685.80 : x
  2. Step 2: Convert to fraction form
    194,718.60/268,713.72 = 108,685.80/x
  3. Step 3: Cross multiply
    194,718.60x = 268,713.72 × 108,685.80
  4. Step 4: Simplify right side
    194,718.60x = 29,205,365,629.18
  5. Step 5: Solve for x
    x = 29,205,365,629.18/194,718.60
  6. Step 6: Final answer
    x = 149,987.55

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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.