Home / 139,242.33-208,825.20-68,128.38

Finding the Fourth Proportional to 139,242.33, 208,825.20 and 68,128.38

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Solution

The fourth proportional to 139,242.33, 208,825.20 and 68,128.38 is: 102,173.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,242.33 : 208,825.20 = 68,128.38 : x
  2. Step 2: Convert to fraction form
    139,242.33/208,825.20 = 68,128.38/x
  3. Step 3: Cross multiply
    139,242.33x = 208,825.20 × 68,128.38
  4. Step 4: Simplify right side
    139,242.33x = 14,226,922,579.18
  5. Step 5: Solve for x
    x = 14,226,922,579.18/139,242.33
  6. Step 6: Final answer
    x = 102,173.83

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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.