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Finding the Fourth Proportional to 118,717.44, 163,830 and 65,002.42

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Solution

The fourth proportional to 118,717.44, 163,830 and 65,002.42 is: 89,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,717.44 : 163,830 = 65,002.42 : x
  2. Step 2: Convert to fraction form
    118,717.44/163,830 = 65,002.42/x
  3. Step 3: Cross multiply
    118,717.44x = 163,830 × 65,002.42
  4. Step 4: Simplify right side
    118,717.44x = 10,649,346,468.60
  5. Step 5: Solve for x
    x = 10,649,346,468.60/118,717.44
  6. Step 6: Final answer
    x = 89,703.30

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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.