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Finding the Fourth Proportional to 118,080.96, 177,075.40 and 39,174

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Solution

The fourth proportional to 118,080.96, 177,075.40 and 39,174 is: 58,745.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,080.96 : 177,075.40 = 39,174 : x
  2. Step 2: Convert to fraction form
    118,080.96/177,075.40 = 39,174/x
  3. Step 3: Cross multiply
    118,080.96x = 177,075.40 × 39,174
  4. Step 4: Simplify right side
    118,080.96x = 6,936,751,719.60
  5. Step 5: Solve for x
    x = 6,936,751,719.60/118,080.96
  6. Step 6: Final answer
    x = 58,745.73

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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.