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Finding the Fourth Proportional to 139,573.32, 209,193.19 and 50,722.80

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Solution

The fourth proportional to 139,573.32, 209,193.19 and 50,722.80 is: 76,023.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,573.32 : 209,193.19 = 50,722.80 : x
  2. Step 2: Convert to fraction form
    139,573.32/209,193.19 = 50,722.80/x
  3. Step 3: Cross multiply
    139,573.32x = 209,193.19 × 50,722.80
  4. Step 4: Simplify right side
    139,573.32x = 10,610,864,337.73
  5. Step 5: Solve for x
    x = 10,610,864,337.73/139,573.32
  6. Step 6: Final answer
    x = 76,023.59

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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.