Home / 209,116.60-313,498.57-90,698.75

Finding the Fourth Proportional to 209,116.60, 313,498.57 and 90,698.75

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Solution

The fourth proportional to 209,116.60, 313,498.57 and 90,698.75 is: 135,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,116.60 : 313,498.57 = 90,698.75 : x
  2. Step 2: Convert to fraction form
    209,116.60/313,498.57 = 90,698.75/x
  3. Step 3: Cross multiply
    209,116.60x = 313,498.57 × 90,698.75
  4. Step 4: Simplify right side
    209,116.60x = 28,433,929,740.66
  5. Step 5: Solve for x
    x = 28,433,929,740.66/209,116.60
  6. Step 6: Final answer
    x = 135,971.65

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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.