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Finding the Fourth Proportional to 272,069.25, 408,111.18 and 85,080.75

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Solution

The fourth proportional to 272,069.25, 408,111.18 and 85,080.75 is: 127,623.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,069.25 : 408,111.18 = 85,080.75 : x
  2. Step 2: Convert to fraction form
    272,069.25/408,111.18 = 85,080.75/x
  3. Step 3: Cross multiply
    272,069.25x = 408,111.18 × 85,080.75
  4. Step 4: Simplify right side
    272,069.25x = 34,722,405,277.79
  5. Step 5: Solve for x
    x = 34,722,405,277.79/272,069.25
  6. Step 6: Final answer
    x = 127,623.41

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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.