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Finding the Fourth Proportional to 118,708.92, 163,812.08 and 64,983.64

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Solution

The fourth proportional to 118,708.92, 163,812.08 and 64,983.64 is: 89,674.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,708.92 : 163,812.08 = 64,983.64 : x
  2. Step 2: Convert to fraction form
    118,708.92/163,812.08 = 64,983.64/x
  3. Step 3: Cross multiply
    118,708.92x = 163,812.08 × 64,983.64
  4. Step 4: Simplify right side
    118,708.92x = 10,645,105,234.37
  5. Step 5: Solve for x
    x = 10,645,105,234.37/118,708.92
  6. Step 6: Final answer
    x = 89,674.01

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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.