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Finding the Fourth Proportional to 118,775.72, 163,910.51 and 65,062.66

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Solution

The fourth proportional to 118,775.72, 163,910.51 and 65,062.66 is: 89,786.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,775.72 : 163,910.51 = 65,062.66 : x
  2. Step 2: Convert to fraction form
    118,775.72/163,910.51 = 65,062.66/x
  3. Step 3: Cross multiply
    118,775.72x = 163,910.51 × 65,062.66
  4. Step 4: Simplify right side
    118,775.72x = 10,664,453,782.56
  5. Step 5: Solve for x
    x = 10,664,453,782.56/118,775.72
  6. Step 6: Final answer
    x = 89,786.48

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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.