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Finding the Fourth Proportional to 169,719.86, 254,192.28 and 81,035.64

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Solution

The fourth proportional to 169,719.86, 254,192.28 and 81,035.64 is: 121,368.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,719.86 : 254,192.28 = 81,035.64 : x
  2. Step 2: Convert to fraction form
    169,719.86/254,192.28 = 81,035.64/x
  3. Step 3: Cross multiply
    169,719.86x = 254,192.28 × 81,035.64
  4. Step 4: Simplify right side
    169,719.86x = 20,598,633,788.98
  5. Step 5: Solve for x
    x = 20,598,633,788.98/169,719.86
  6. Step 6: Final answer
    x = 121,368.44

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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.