Home / 139,276.09-208,834-74,280.31

Finding the Fourth Proportional to 139,276.09, 208,834 and 74,280.31

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Solution

The fourth proportional to 139,276.09, 208,834 and 74,280.31 is: 111,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,276.09 : 208,834 = 74,280.31 : x
  2. Step 2: Convert to fraction form
    139,276.09/208,834 = 74,280.31/x
  3. Step 3: Cross multiply
    139,276.09x = 208,834 × 74,280.31
  4. Step 4: Simplify right side
    139,276.09x = 15,512,254,258.54
  5. Step 5: Solve for x
    x = 15,512,254,258.54/139,276.09
  6. Step 6: Final answer
    x = 111,377.73

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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.