Home / 139,844.08-209,949.06-83,021.72

Finding the Fourth Proportional to 139,844.08, 209,949.06 and 83,021.72

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Solution

The fourth proportional to 139,844.08, 209,949.06 and 83,021.72 is: 124,641.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,844.08 : 209,949.06 = 83,021.72 : x
  2. Step 2: Convert to fraction form
    139,844.08/209,949.06 = 83,021.72/x
  3. Step 3: Cross multiply
    139,844.08x = 209,949.06 × 83,021.72
  4. Step 4: Simplify right side
    139,844.08x = 17,430,332,073.58
  5. Step 5: Solve for x
    x = 17,430,332,073.58/139,844.08
  6. Step 6: Final answer
    x = 124,641.19

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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.