Home / 139,738.10-209,344.70-108,420.26

Finding the Fourth Proportional to 139,738.10, 209,344.70 and 108,420.26

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Solution

The fourth proportional to 139,738.10, 209,344.70 and 108,420.26 is: 162,426.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,738.10 : 209,344.70 = 108,420.26 : x
  2. Step 2: Convert to fraction form
    139,738.10/209,344.70 = 108,420.26/x
  3. Step 3: Cross multiply
    139,738.10x = 209,344.70 × 108,420.26
  4. Step 4: Simplify right side
    139,738.10x = 22,697,206,027.95
  5. Step 5: Solve for x
    x = 22,697,206,027.95/139,738.10
  6. Step 6: Final answer
    x = 162,426.76

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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.