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Finding the Fourth Proportional to 169,080.84, 253,623.42 and 80,343

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Solution

The fourth proportional to 169,080.84, 253,623.42 and 80,343 is: 120,515.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,080.84 : 253,623.42 = 80,343 : x
  2. Step 2: Convert to fraction form
    169,080.84/253,623.42 = 80,343/x
  3. Step 3: Cross multiply
    169,080.84x = 253,623.42 × 80,343
  4. Step 4: Simplify right side
    169,080.84x = 20,376,866,433.06
  5. Step 5: Solve for x
    x = 20,376,866,433.06/169,080.84
  6. Step 6: Final answer
    x = 120,515.53

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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.