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Finding the Fourth Proportional to 118,172.92, 177,301.38 and 72,632.32

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Solution

The fourth proportional to 118,172.92, 177,301.38 and 72,632.32 is: 108,974.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,172.92 : 177,301.38 = 72,632.32 : x
  2. Step 2: Convert to fraction form
    118,172.92/177,301.38 = 72,632.32/x
  3. Step 3: Cross multiply
    118,172.92x = 177,301.38 × 72,632.32
  4. Step 4: Simplify right side
    118,172.92x = 12,877,810,568.60
  5. Step 5: Solve for x
    x = 12,877,810,568.60/118,172.92
  6. Step 6: Final answer
    x = 108,974.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.