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Finding the Fourth Proportional to 209,375.76, 314,092.59 and 67,187.59

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Solution

The fourth proportional to 209,375.76, 314,092.59 and 67,187.59 is: 100,790.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,375.76 : 314,092.59 = 67,187.59 : x
  2. Step 2: Convert to fraction form
    209,375.76/314,092.59 = 67,187.59/x
  3. Step 3: Cross multiply
    209,375.76x = 314,092.59 × 67,187.59
  4. Step 4: Simplify right side
    209,375.76x = 21,103,124,158.96
  5. Step 5: Solve for x
    x = 21,103,124,158.96/209,375.76
  6. Step 6: Final answer
    x = 100,790.67

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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.