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Finding the Fourth Proportional to 118,609.79, 163,680.06 and 64,894.04

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Solution

The fourth proportional to 118,609.79, 163,680.06 and 64,894.04 is: 89,552.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,609.79 : 163,680.06 = 64,894.04 : x
  2. Step 2: Convert to fraction form
    118,609.79/163,680.06 = 64,894.04/x
  3. Step 3: Cross multiply
    118,609.79x = 163,680.06 × 64,894.04
  4. Step 4: Simplify right side
    118,609.79x = 10,621,859,217.97
  5. Step 5: Solve for x
    x = 10,621,859,217.97/118,609.79
  6. Step 6: Final answer
    x = 89,552.97

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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.