Home / 139,640.40-209,271.72-100,110.24

Finding the Fourth Proportional to 139,640.40, 209,271.72 and 100,110.24

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Solution

The fourth proportional to 139,640.40, 209,271.72 and 100,110.24 is: 150,029.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,640.40 : 209,271.72 = 100,110.24 : x
  2. Step 2: Convert to fraction form
    139,640.40/209,271.72 = 100,110.24/x
  3. Step 3: Cross multiply
    139,640.40x = 209,271.72 × 100,110.24
  4. Step 4: Simplify right side
    139,640.40x = 20,950,242,114.41
  5. Step 5: Solve for x
    x = 20,950,242,114.41/139,640.40
  6. Step 6: Final answer
    x = 150,029.95

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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.