Home / 209,010.60-313,515.90-68,735.40

Finding the Fourth Proportional to 209,010.60, 313,515.90 and 68,735.40

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Solution

The fourth proportional to 209,010.60, 313,515.90 and 68,735.40 is: 103,103.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,010.60 : 313,515.90 = 68,735.40 : x
  2. Step 2: Convert to fraction form
    209,010.60/313,515.90 = 68,735.40/x
  3. Step 3: Cross multiply
    209,010.60x = 313,515.90 × 68,735.40
  4. Step 4: Simplify right side
    209,010.60x = 21,549,640,792.86
  5. Step 5: Solve for x
    x = 21,549,640,792.86/209,010.60
  6. Step 6: Final answer
    x = 103,103.10

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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.