Home / 209,982.28-314,969.10-69,742.12

Finding the Fourth Proportional to 209,982.28, 314,969.10 and 69,742.12

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Solution

The fourth proportional to 209,982.28, 314,969.10 and 69,742.12 is: 104,611.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,982.28 : 314,969.10 = 69,742.12 : x
  2. Step 2: Convert to fraction form
    209,982.28/314,969.10 = 69,742.12/x
  3. Step 3: Cross multiply
    209,982.28x = 314,969.10 × 69,742.12
  4. Step 4: Simplify right side
    209,982.28x = 21,966,612,768.49
  5. Step 5: Solve for x
    x = 21,966,612,768.49/209,982.28
  6. Step 6: Final answer
    x = 104,611.75

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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.