Home / 213,982.10-320,851.65-80,866.70

Finding the Fourth Proportional to 213,982.10, 320,851.65 and 80,866.70

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Solution

The fourth proportional to 213,982.10, 320,851.65 and 80,866.70 is: 121,254.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,982.10 : 320,851.65 = 80,866.70 : x
  2. Step 2: Convert to fraction form
    213,982.10/320,851.65 = 80,866.70/x
  3. Step 3: Cross multiply
    213,982.10x = 320,851.65 × 80,866.70
  4. Step 4: Simplify right side
    213,982.10x = 25,946,214,125.06
  5. Step 5: Solve for x
    x = 25,946,214,125.06/213,982.10
  6. Step 6: Final answer
    x = 121,254.13

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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.