Home / 209,302.20-313,938.90-67,145.40

Finding the Fourth Proportional to 209,302.20, 313,938.90 and 67,145.40

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Solution

The fourth proportional to 209,302.20, 313,938.90 and 67,145.40 is: 100,713.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,302.20 : 313,938.90 = 67,145.40 : x
  2. Step 2: Convert to fraction form
    209,302.20/313,938.90 = 67,145.40/x
  3. Step 3: Cross multiply
    209,302.20x = 313,938.90 × 67,145.40
  4. Step 4: Simplify right side
    209,302.20x = 21,079,553,016.06
  5. Step 5: Solve for x
    x = 21,079,553,016.06/209,302.20
  6. Step 6: Final answer
    x = 100,713.48

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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.