Home / 139,081.03-208,551.67-68,009.20

Finding the Fourth Proportional to 139,081.03, 208,551.67 and 68,009.20

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Solution

The fourth proportional to 139,081.03, 208,551.67 and 68,009.20 is: 101,979.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,081.03 : 208,551.67 = 68,009.20 : x
  2. Step 2: Convert to fraction form
    139,081.03/208,551.67 = 68,009.20/x
  3. Step 3: Cross multiply
    139,081.03x = 208,551.67 × 68,009.20
  4. Step 4: Simplify right side
    139,081.03x = 14,183,432,235.36
  5. Step 5: Solve for x
    x = 14,183,432,235.36/139,081.03
  6. Step 6: Final answer
    x = 101,979.63

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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.