Home / 209,982.80-314,974.20-121,409.30

Finding the Fourth Proportional to 209,982.80, 314,974.20 and 121,409.30

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Solution

The fourth proportional to 209,982.80, 314,974.20 and 121,409.30 is: 182,113.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,982.80 : 314,974.20 = 121,409.30 : x
  2. Step 2: Convert to fraction form
    209,982.80/314,974.20 = 121,409.30/x
  3. Step 3: Cross multiply
    209,982.80x = 314,974.20 × 121,409.30
  4. Step 4: Simplify right side
    209,982.80x = 38,240,797,140.06
  5. Step 5: Solve for x
    x = 38,240,797,140.06/209,982.80
  6. Step 6: Final answer
    x = 182,113.95

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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.