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Finding the Fourth Proportional to 169,111.68, 253,670 and 80,374.24

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Solution

The fourth proportional to 169,111.68, 253,670 and 80,374.24 is: 120,562.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,111.68 : 253,670 = 80,374.24 : x
  2. Step 2: Convert to fraction form
    169,111.68/253,670 = 80,374.24/x
  3. Step 3: Cross multiply
    169,111.68x = 253,670 × 80,374.24
  4. Step 4: Simplify right side
    169,111.68x = 20,388,533,460.80
  5. Step 5: Solve for x
    x = 20,388,533,460.80/169,111.68
  6. Step 6: Final answer
    x = 120,562.54

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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.