Home / 209,188.12-313,605.87-90,770.44

Finding the Fourth Proportional to 209,188.12, 313,605.87 and 90,770.44

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Solution

The fourth proportional to 209,188.12, 313,605.87 and 90,770.44 is: 136,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,188.12 : 313,605.87 = 90,770.44 : x
  2. Step 2: Convert to fraction form
    209,188.12/313,605.87 = 90,770.44/x
  3. Step 3: Cross multiply
    209,188.12x = 313,605.87 × 90,770.44
  4. Step 4: Simplify right side
    209,188.12x = 28,466,142,806.48
  5. Step 5: Solve for x
    x = 28,466,142,806.48/209,188.12
  6. Step 6: Final answer
    x = 136,079.16

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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.