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Finding the Fourth Proportional to 113,749.44, 156,888 and 68,424

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Solution

The fourth proportional to 113,749.44, 156,888 and 68,424 is: 94,373.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,749.44 : 156,888 = 68,424 : x
  2. Step 2: Convert to fraction form
    113,749.44/156,888 = 68,424/x
  3. Step 3: Cross multiply
    113,749.44x = 156,888 × 68,424
  4. Step 4: Simplify right side
    113,749.44x = 10,734,904,512
  5. Step 5: Solve for x
    x = 10,734,904,512/113,749.44
  6. Step 6: Final answer
    x = 94,373.25

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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.