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Finding the Fourth Proportional to 118,812.11, 163,960.67 and 65,099.16

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Solution

The fourth proportional to 118,812.11, 163,960.67 and 65,099.16 is: 89,836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,812.11 : 163,960.67 = 65,099.16 : x
  2. Step 2: Convert to fraction form
    118,812.11/163,960.67 = 65,099.16/x
  3. Step 3: Cross multiply
    118,812.11x = 163,960.67 × 65,099.16
  4. Step 4: Simplify right side
    118,812.11x = 10,673,702,052.79
  5. Step 5: Solve for x
    x = 10,673,702,052.79/118,812.11
  6. Step 6: Final answer
    x = 89,836.82

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1.5x scale

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.