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Finding the Fourth Proportional to 118,382.85, 163,371.85 and 64,668.76

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Solution

The fourth proportional to 118,382.85, 163,371.85 and 64,668.76 is: 89,244.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,382.85 : 163,371.85 = 64,668.76 : x
  2. Step 2: Convert to fraction form
    118,382.85/163,371.85 = 64,668.76/x
  3. Step 3: Cross multiply
    118,382.85x = 163,371.85 × 64,668.76
  4. Step 4: Simplify right side
    118,382.85x = 10,565,054,388.30
  5. Step 5: Solve for x
    x = 10,565,054,388.30/118,382.85
  6. Step 6: Final answer
    x = 89,244.81

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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.