Home / 139,939.10-209,907.60-40,099.38

Finding the Fourth Proportional to 139,939.10, 209,907.60 and 40,099.38

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Solution

The fourth proportional to 139,939.10, 209,907.60 and 40,099.38 is: 60,148.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,939.10 : 209,907.60 = 40,099.38 : x
  2. Step 2: Convert to fraction form
    139,939.10/209,907.60 = 40,099.38/x
  3. Step 3: Cross multiply
    139,939.10x = 209,907.60 × 40,099.38
  4. Step 4: Simplify right side
    139,939.10x = 8,417,164,617.29
  5. Step 5: Solve for x
    x = 8,417,164,617.29/139,939.10
  6. Step 6: Final answer
    x = 60,148.77

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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.