Home / 209,971.75-314,989.35-67,769.50

Finding the Fourth Proportional to 209,971.75, 314,989.35 and 67,769.50

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Solution

The fourth proportional to 209,971.75, 314,989.35 and 67,769.50 is: 101,664.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,971.75 : 314,989.35 = 67,769.50 : x
  2. Step 2: Convert to fraction form
    209,971.75/314,989.35 = 67,769.50/x
  3. Step 3: Cross multiply
    209,971.75x = 314,989.35 × 67,769.50
  4. Step 4: Simplify right side
    209,971.75x = 21,346,670,754.83
  5. Step 5: Solve for x
    x = 21,346,670,754.83/209,971.75
  6. Step 6: Final answer
    x = 101,664.49

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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.