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Finding the Fourth Proportional to 170,090.52, 255,130.11 and 91,358.52

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Solution

The fourth proportional to 170,090.52, 255,130.11 and 91,358.52 is: 137,034.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,090.52 : 255,130.11 = 91,358.52 : x
  2. Step 2: Convert to fraction form
    170,090.52/255,130.11 = 91,358.52/x
  3. Step 3: Cross multiply
    170,090.52x = 255,130.11 × 91,358.52
  4. Step 4: Simplify right side
    170,090.52x = 23,308,309,257.04
  5. Step 5: Solve for x
    x = 23,308,309,257.04/170,090.52
  6. Step 6: Final answer
    x = 137,034.73

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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.