Home / 210,688.62-316,029.75-68,540.37

Finding the Fourth Proportional to 210,688.62, 316,029.75 and 68,540.37

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Solution

The fourth proportional to 210,688.62, 316,029.75 and 68,540.37 is: 102,809.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,688.62 : 316,029.75 = 68,540.37 : x
  2. Step 2: Convert to fraction form
    210,688.62/316,029.75 = 68,540.37/x
  3. Step 3: Cross multiply
    210,688.62x = 316,029.75 × 68,540.37
  4. Step 4: Simplify right side
    210,688.62x = 21,660,795,996.01
  5. Step 5: Solve for x
    x = 21,660,795,996.01/210,688.62
  6. Step 6: Final answer
    x = 102,809.52

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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.