Home / 208,719.64-312,933.54-66,517.24

Finding the Fourth Proportional to 208,719.64, 312,933.54 and 66,517.24

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Solution

The fourth proportional to 208,719.64, 312,933.54 and 66,517.24 is: 99,729.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,719.64 : 312,933.54 = 66,517.24 : x
  2. Step 2: Convert to fraction form
    208,719.64/312,933.54 = 66,517.24/x
  3. Step 3: Cross multiply
    208,719.64x = 312,933.54 × 66,517.24
  4. Step 4: Simplify right side
    208,719.64x = 20,815,475,384.23
  5. Step 5: Solve for x
    x = 20,815,475,384.23/208,719.64
  6. Step 6: Final answer
    x = 99,729.36

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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.