Home / 213,889.64-320,851.02-71,735.72

Finding the Fourth Proportional to 213,889.64, 320,851.02 and 71,735.72

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Solution

The fourth proportional to 213,889.64, 320,851.02 and 71,735.72 is: 107,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,889.64 : 320,851.02 = 71,735.72 : x
  2. Step 2: Convert to fraction form
    213,889.64/320,851.02 = 71,735.72/x
  3. Step 3: Cross multiply
    213,889.64x = 320,851.02 × 71,735.72
  4. Step 4: Simplify right side
    213,889.64x = 23,016,478,932.43
  5. Step 5: Solve for x
    x = 23,016,478,932.43/213,889.64
  6. Step 6: Final answer
    x = 107,609.13

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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.