Home / 211,003.45-316,532.96-68,798.78

Finding the Fourth Proportional to 211,003.45, 316,532.96 and 68,798.78

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Solution

The fourth proportional to 211,003.45, 316,532.96 and 68,798.78 is: 103,207.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,003.45 : 316,532.96 = 68,798.78 : x
  2. Step 2: Convert to fraction form
    211,003.45/316,532.96 = 68,798.78/x
  3. Step 3: Cross multiply
    211,003.45x = 316,532.96 × 68,798.78
  4. Step 4: Simplify right side
    211,003.45x = 21,777,081,133.79
  5. Step 5: Solve for x
    x = 21,777,081,133.79/211,003.45
  6. Step 6: Final answer
    x = 103,207.23

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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.