Home / 139,819.30-209,581.26-100,355.02

Finding the Fourth Proportional to 139,819.30, 209,581.26 and 100,355.02

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Solution

The fourth proportional to 139,819.30, 209,581.26 and 100,355.02 is: 150,426.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,819.30 : 209,581.26 = 100,355.02 : x
  2. Step 2: Convert to fraction form
    139,819.30/209,581.26 = 100,355.02/x
  3. Step 3: Cross multiply
    139,819.30x = 209,581.26 × 100,355.02
  4. Step 4: Simplify right side
    139,819.30x = 21,032,531,538.93
  5. Step 5: Solve for x
    x = 21,032,531,538.93/139,819.30
  6. Step 6: Final answer
    x = 150,426.53

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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.