Home / 209,152.13-313,777.40-68,910.75

Finding the Fourth Proportional to 209,152.13, 313,777.40 and 68,910.75

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Solution

The fourth proportional to 209,152.13, 313,777.40 and 68,910.75 is: 103,382.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,152.13 : 313,777.40 = 68,910.75 : x
  2. Step 2: Convert to fraction form
    209,152.13/313,777.40 = 68,910.75/x
  3. Step 3: Cross multiply
    209,152.13x = 313,777.40 × 68,910.75
  4. Step 4: Simplify right side
    209,152.13x = 21,622,635,622.50
  5. Step 5: Solve for x
    x = 21,622,635,622.50/209,152.13
  6. Step 6: Final answer
    x = 103,382.34

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1.5x scale

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.