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Finding the Fourth Proportional to 124,064, 171,135.36 and 73,760

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Solution

The fourth proportional to 124,064, 171,135.36 and 73,760 is: 101,745.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,064 : 171,135.36 = 73,760 : x
  2. Step 2: Convert to fraction form
    124,064/171,135.36 = 73,760/x
  3. Step 3: Cross multiply
    124,064x = 171,135.36 × 73,760
  4. Step 4: Simplify right side
    124,064x = 12,622,944,153.60
  5. Step 5: Solve for x
    x = 12,622,944,153.60/124,064
  6. Step 6: Final answer
    x = 101,745.42

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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.