Home / 209,899.20-314,834.40-67,742.40

Finding the Fourth Proportional to 209,899.20, 314,834.40 and 67,742.40

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Solution

The fourth proportional to 209,899.20, 314,834.40 and 67,742.40 is: 101,608.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,899.20 : 314,834.40 = 67,742.40 : x
  2. Step 2: Convert to fraction form
    209,899.20/314,834.40 = 67,742.40/x
  3. Step 3: Cross multiply
    209,899.20x = 314,834.40 × 67,742.40
  4. Step 4: Simplify right side
    209,899.20x = 21,327,637,858.56
  5. Step 5: Solve for x
    x = 21,327,637,858.56/209,899.20
  6. Step 6: Final answer
    x = 101,608.95

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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.