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Finding the Fourth Proportional to 105,163.60, 157,745.40 and 101,081.20

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Solution

The fourth proportional to 105,163.60, 157,745.40 and 101,081.20 is: 151,621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,163.60 : 157,745.40 = 101,081.20 : x
  2. Step 2: Convert to fraction form
    105,163.60/157,745.40 = 101,081.20/x
  3. Step 3: Cross multiply
    105,163.60x = 157,745.40 × 101,081.20
  4. Step 4: Simplify right side
    105,163.60x = 15,945,094,326.48
  5. Step 5: Solve for x
    x = 15,945,094,326.48/105,163.60
  6. Step 6: Final answer
    x = 151,621.80

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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.