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Finding the Fourth Proportional to 110,999.84, 153,077.56 and 72,745.45

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Solution

The fourth proportional to 110,999.84, 153,077.56 and 72,745.45 is: 100,321.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,999.84 : 153,077.56 = 72,745.45 : x
  2. Step 2: Convert to fraction form
    110,999.84/153,077.56 = 72,745.45/x
  3. Step 3: Cross multiply
    110,999.84x = 153,077.56 × 72,745.45
  4. Step 4: Simplify right side
    110,999.84x = 11,135,695,558.94
  5. Step 5: Solve for x
    x = 11,135,695,558.94/110,999.84
  6. Step 6: Final answer
    x = 100,321.73

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1.5x scale

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.