Home / 209,112.61-313,492.57-90,694.75

Finding the Fourth Proportional to 209,112.61, 313,492.57 and 90,694.75

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Solution

The fourth proportional to 209,112.61, 313,492.57 and 90,694.75 is: 135,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,112.61 : 313,492.57 = 90,694.75 : x
  2. Step 2: Convert to fraction form
    209,112.61/313,492.57 = 90,694.75/x
  3. Step 3: Cross multiply
    209,112.61x = 313,492.57 × 90,694.75
  4. Step 4: Simplify right side
    209,112.61x = 28,432,130,263.01
  5. Step 5: Solve for x
    x = 28,432,130,263.01/209,112.61
  6. Step 6: Final answer
    x = 135,965.64

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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.