Home / 209,119.60-313,503.06-90,701.76

Finding the Fourth Proportional to 209,119.60, 313,503.06 and 90,701.76

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Solution

The fourth proportional to 209,119.60, 313,503.06 and 90,701.76 is: 135,976.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,119.60 : 313,503.06 = 90,701.76 : x
  2. Step 2: Convert to fraction form
    209,119.60/313,503.06 = 90,701.76/x
  3. Step 3: Cross multiply
    209,119.60x = 313,503.06 × 90,701.76
  4. Step 4: Simplify right side
    209,119.60x = 28,435,279,307.39
  5. Step 5: Solve for x
    x = 28,435,279,307.39/209,119.60
  6. Step 6: Final answer
    x = 135,976.16

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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.