Home / 211,004.45-316,534.46-68,799.78

Finding the Fourth Proportional to 211,004.45, 316,534.46 and 68,799.78

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Solution

The fourth proportional to 211,004.45, 316,534.46 and 68,799.78 is: 103,208.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,004.45 : 316,534.46 = 68,799.78 : x
  2. Step 2: Convert to fraction form
    211,004.45/316,534.46 = 68,799.78/x
  3. Step 3: Cross multiply
    211,004.45x = 316,534.46 × 68,799.78
  4. Step 4: Simplify right side
    211,004.45x = 21,777,501,210.42
  5. Step 5: Solve for x
    x = 21,777,501,210.42/211,004.45
  6. Step 6: Final answer
    x = 103,208.73

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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.