Home / 139,839.19-209,571.26-76,564.01

Finding the Fourth Proportional to 139,839.19, 209,571.26 and 76,564.01

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Solution

The fourth proportional to 139,839.19, 209,571.26 and 76,564.01 is: 114,743.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,839.19 : 209,571.26 = 76,564.01 : x
  2. Step 2: Convert to fraction form
    139,839.19/209,571.26 = 76,564.01/x
  3. Step 3: Cross multiply
    139,839.19x = 209,571.26 × 76,564.01
  4. Step 4: Simplify right side
    139,839.19x = 16,045,616,046.35
  5. Step 5: Solve for x
    x = 16,045,616,046.35/139,839.19
  6. Step 6: Final answer
    x = 114,743.34

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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.