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Finding the Fourth Proportional to 118,324, 163,287.12 and 80,664.16

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Solution

The fourth proportional to 118,324, 163,287.12 and 80,664.16 is: 111,316.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,324 : 163,287.12 = 80,664.16 : x
  2. Step 2: Convert to fraction form
    118,324/163,287.12 = 80,664.16/x
  3. Step 3: Cross multiply
    118,324x = 163,287.12 × 80,664.16
  4. Step 4: Simplify right side
    118,324x = 13,171,418,373.62
  5. Step 5: Solve for x
    x = 13,171,418,373.62/118,324
  6. Step 6: Final answer
    x = 111,316.54

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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.