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Finding the Fourth Proportional to 170,089.52, 255,128.61 and 91,357.52

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Solution

The fourth proportional to 170,089.52, 255,128.61 and 91,357.52 is: 137,033.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,089.52 : 255,128.61 = 91,357.52 : x
  2. Step 2: Convert to fraction form
    170,089.52/255,128.61 = 91,357.52/x
  3. Step 3: Cross multiply
    170,089.52x = 255,128.61 × 91,357.52
  4. Step 4: Simplify right side
    170,089.52x = 23,307,917,090.65
  5. Step 5: Solve for x
    x = 23,307,917,090.65/170,089.52
  6. Step 6: Final answer
    x = 137,033.23

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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.