Home / 213,966.60-320,828.40-80,851.20

Finding the Fourth Proportional to 213,966.60, 320,828.40 and 80,851.20

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Solution

The fourth proportional to 213,966.60, 320,828.40 and 80,851.20 is: 121,230.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,966.60 : 320,828.40 = 80,851.20 : x
  2. Step 2: Convert to fraction form
    213,966.60/320,828.40 = 80,851.20/x
  3. Step 3: Cross multiply
    213,966.60x = 320,828.40 × 80,851.20
  4. Step 4: Simplify right side
    213,966.60x = 25,939,361,134.08
  5. Step 5: Solve for x
    x = 25,939,361,134.08/213,966.60
  6. Step 6: Final answer
    x = 121,230.89

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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.