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Finding the Fourth Proportional to 101,245.60, 139,720.26 and 55,923.45

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Solution

The fourth proportional to 101,245.60, 139,720.26 and 55,923.45 is: 77,175.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,245.60 : 139,720.26 = 55,923.45 : x
  2. Step 2: Convert to fraction form
    101,245.60/139,720.26 = 55,923.45/x
  3. Step 3: Cross multiply
    101,245.60x = 139,720.26 × 55,923.45
  4. Step 4: Simplify right side
    101,245.60x = 7,813,638,974.10
  5. Step 5: Solve for x
    x = 7,813,638,974.10/101,245.60
  6. Step 6: Final answer
    x = 77,175.10

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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.