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Finding the Fourth Proportional to 118,745.40, 163,872.36 and 65,035.56

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Solution

The fourth proportional to 118,745.40, 163,872.36 and 65,035.56 is: 89,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,745.40 : 163,872.36 = 65,035.56 : x
  2. Step 2: Convert to fraction form
    118,745.40/163,872.36 = 65,035.56/x
  3. Step 3: Cross multiply
    118,745.40x = 163,872.36 × 65,035.56
  4. Step 4: Simplify right side
    118,745.40x = 10,657,530,701.12
  5. Step 5: Solve for x
    x = 10,657,530,701.12/118,745.40
  6. Step 6: Final answer
    x = 89,751.10

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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.