Home / 139,579.20-209,312.64-50,811.84

Finding the Fourth Proportional to 139,579.20, 209,312.64 and 50,811.84

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Solution

The fourth proportional to 139,579.20, 209,312.64 and 50,811.84 is: 76,197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,579.20 : 209,312.64 = 50,811.84 : x
  2. Step 2: Convert to fraction form
    139,579.20/209,312.64 = 50,811.84/x
  3. Step 3: Cross multiply
    139,579.20x = 209,312.64 × 50,811.84
  4. Step 4: Simplify right side
    139,579.20x = 10,635,560,373.66
  5. Step 5: Solve for x
    x = 10,635,560,373.66/139,579.20
  6. Step 6: Final answer
    x = 76,197.32

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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.