Home / 205,118.40-307,677.60-111,806.40

Finding the Fourth Proportional to 205,118.40, 307,677.60 and 111,806.40

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Solution

The fourth proportional to 205,118.40, 307,677.60 and 111,806.40 is: 167,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,118.40 : 307,677.60 = 111,806.40 : x
  2. Step 2: Convert to fraction form
    205,118.40/307,677.60 = 111,806.40/x
  3. Step 3: Cross multiply
    205,118.40x = 307,677.60 × 111,806.40
  4. Step 4: Simplify right side
    205,118.40x = 34,400,324,816.64
  5. Step 5: Solve for x
    x = 34,400,324,816.64/205,118.40
  6. Step 6: Final answer
    x = 167,709.60

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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.