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Finding the Fourth Proportional to 118,988.56, 164,205.48 and 65,273.68

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Solution

The fourth proportional to 118,988.56, 164,205.48 and 65,273.68 is: 90,078.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,988.56 : 164,205.48 = 65,273.68 : x
  2. Step 2: Convert to fraction form
    118,988.56/164,205.48 = 65,273.68/x
  3. Step 3: Cross multiply
    118,988.56x = 164,205.48 × 65,273.68
  4. Step 4: Simplify right side
    118,988.56x = 10,718,295,955.77
  5. Step 5: Solve for x
    x = 10,718,295,955.77/118,988.56
  6. Step 6: Final answer
    x = 90,078.37

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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.