Home / 139,451.42-209,155.11-115,910.18

Finding the Fourth Proportional to 139,451.42, 209,155.11 and 115,910.18

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Solution

The fourth proportional to 139,451.42, 209,155.11 and 115,910.18 is: 173,846.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,451.42 : 209,155.11 = 115,910.18 : x
  2. Step 2: Convert to fraction form
    139,451.42/209,155.11 = 115,910.18/x
  3. Step 3: Cross multiply
    139,451.42x = 209,155.11 × 115,910.18
  4. Step 4: Simplify right side
    139,451.42x = 24,243,206,448.02
  5. Step 5: Solve for x
    x = 24,243,206,448.02/139,451.42
  6. Step 6: Final answer
    x = 173,846.97

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1.5x scale

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.