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Finding the Fourth Proportional to 118,674.87, 163,771.20 and 64,959.41

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Solution

The fourth proportional to 118,674.87, 163,771.20 and 64,959.41 is: 89,643.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,674.87 : 163,771.20 = 64,959.41 : x
  2. Step 2: Convert to fraction form
    118,674.87/163,771.20 = 64,959.41/x
  3. Step 3: Cross multiply
    118,674.87x = 163,771.20 × 64,959.41
  4. Step 4: Simplify right side
    118,674.87x = 10,638,479,708.14
  5. Step 5: Solve for x
    x = 10,638,479,708.14/118,674.87
  6. Step 6: Final answer
    x = 89,643.91

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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.