Home / 139,629.75-209,575.84-73,117.61

Finding the Fourth Proportional to 139,629.75, 209,575.84 and 73,117.61

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Solution

The fourth proportional to 139,629.75, 209,575.84 and 73,117.61 is: 109,745.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,629.75 : 209,575.84 = 73,117.61 : x
  2. Step 2: Convert to fraction form
    139,629.75/209,575.84 = 73,117.61/x
  3. Step 3: Cross multiply
    139,629.75x = 209,575.84 × 73,117.61
  4. Step 4: Simplify right side
    139,629.75x = 15,323,684,534.54
  5. Step 5: Solve for x
    x = 15,323,684,534.54/139,629.75
  6. Step 6: Final answer
    x = 109,745.13

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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.