Home / 139,743.70-209,615.55-100,669.30

Finding the Fourth Proportional to 139,743.70, 209,615.55 and 100,669.30

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Solution

The fourth proportional to 139,743.70, 209,615.55 and 100,669.30 is: 151,003.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,743.70 : 209,615.55 = 100,669.30 : x
  2. Step 2: Convert to fraction form
    139,743.70/209,615.55 = 100,669.30/x
  3. Step 3: Cross multiply
    139,743.70x = 209,615.55 × 100,669.30
  4. Step 4: Simplify right side
    139,743.70x = 21,101,850,687.62
  5. Step 5: Solve for x
    x = 21,101,850,687.62/139,743.70
  6. Step 6: Final answer
    x = 151,003.95

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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.