Home / 209,156.13-313,783.40-68,914.75

Finding the Fourth Proportional to 209,156.13, 313,783.40 and 68,914.75

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Solution

The fourth proportional to 209,156.13, 313,783.40 and 68,914.75 is: 103,388.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,156.13 : 313,783.40 = 68,914.75 : x
  2. Step 2: Convert to fraction form
    209,156.13/313,783.40 = 68,914.75/x
  3. Step 3: Cross multiply
    209,156.13x = 313,783.40 × 68,914.75
  4. Step 4: Simplify right side
    209,156.13x = 21,624,304,565.15
  5. Step 5: Solve for x
    x = 21,624,304,565.15/209,156.13
  6. Step 6: Final answer
    x = 103,388.34

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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.