Home / 209,921.48-314,803.85-67,731.04

Finding the Fourth Proportional to 209,921.48, 314,803.85 and 67,731.04

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Solution

The fourth proportional to 209,921.48, 314,803.85 and 67,731.04 is: 101,571.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,921.48 : 314,803.85 = 67,731.04 : x
  2. Step 2: Convert to fraction form
    209,921.48/314,803.85 = 67,731.04/x
  3. Step 3: Cross multiply
    209,921.48x = 314,803.85 × 67,731.04
  4. Step 4: Simplify right side
    209,921.48x = 21,321,991,030.84
  5. Step 5: Solve for x
    x = 21,321,991,030.84/209,921.48
  6. Step 6: Final answer
    x = 101,571.27

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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.