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Finding the Fourth Proportional to 118,394.16, 163,384.11 and 64,680.09

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Solution

The fourth proportional to 118,394.16, 163,384.11 and 64,680.09 is: 89,258.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,394.16 : 163,384.11 = 64,680.09 : x
  2. Step 2: Convert to fraction form
    118,394.16/163,384.11 = 64,680.09/x
  3. Step 3: Cross multiply
    118,394.16x = 163,384.11 × 64,680.09
  4. Step 4: Simplify right side
    118,394.16x = 10,567,698,939.37
  5. Step 5: Solve for x
    x = 10,567,698,939.37/118,394.16
  6. Step 6: Final answer
    x = 89,258.62

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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.