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Finding the Fourth Proportional to 101,161.62, 139,603.04 and 55,839.62

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Solution

The fourth proportional to 101,161.62, 139,603.04 and 55,839.62 is: 77,058.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,161.62 : 139,603.04 = 55,839.62 : x
  2. Step 2: Convert to fraction form
    101,161.62/139,603.04 = 55,839.62/x
  3. Step 3: Cross multiply
    101,161.62x = 139,603.04 × 55,839.62
  4. Step 4: Simplify right side
    101,161.62x = 7,795,380,146.03
  5. Step 5: Solve for x
    x = 7,795,380,146.03/101,161.62
  6. Step 6: Final answer
    x = 77,058.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.