Home / 213,031.18-319,711.77-80,032.30

Finding the Fourth Proportional to 213,031.18, 319,711.77 and 80,032.30

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Solution

The fourth proportional to 213,031.18, 319,711.77 and 80,032.30 is: 120,110.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,031.18 : 319,711.77 = 80,032.30 : x
  2. Step 2: Convert to fraction form
    213,031.18/319,711.77 = 80,032.30/x
  3. Step 3: Cross multiply
    213,031.18x = 319,711.77 × 80,032.30
  4. Step 4: Simplify right side
    213,031.18x = 25,587,268,290.17
  5. Step 5: Solve for x
    x = 25,587,268,290.17/213,031.18
  6. Step 6: Final answer
    x = 120,110.44

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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.