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Finding the Fourth Proportional to 121,825.53, 182,904.09 and 68,555.15

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Solution

The fourth proportional to 121,825.53, 182,904.09 and 68,555.15 is: 102,926.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,825.53 : 182,904.09 = 68,555.15 : x
  2. Step 2: Convert to fraction form
    121,825.53/182,904.09 = 68,555.15/x
  3. Step 3: Cross multiply
    121,825.53x = 182,904.09 × 68,555.15
  4. Step 4: Simplify right side
    121,825.53x = 12,539,016,068.27
  5. Step 5: Solve for x
    x = 12,539,016,068.27/121,825.53
  6. Step 6: Final answer
    x = 102,926.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.