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Finding the Fourth Proportional to 135,172.52, 186,538.16 and 75,556.52

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Solution

The fourth proportional to 135,172.52, 186,538.16 and 75,556.52 is: 104,268.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,172.52 : 186,538.16 = 75,556.52 : x
  2. Step 2: Convert to fraction form
    135,172.52/186,538.16 = 75,556.52/x
  3. Step 3: Cross multiply
    135,172.52x = 186,538.16 × 75,556.52
  4. Step 4: Simplify right side
    135,172.52x = 14,094,174,216.80
  5. Step 5: Solve for x
    x = 14,094,174,216.80/135,172.52
  6. Step 6: Final answer
    x = 104,268.04

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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.