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Finding the Fourth Proportional to 170,525.94, 255,570 and 81,646.26

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Solution

The fourth proportional to 170,525.94, 255,570 and 81,646.26 is: 122,364.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,525.94 : 255,570 = 81,646.26 : x
  2. Step 2: Convert to fraction form
    170,525.94/255,570 = 81,646.26/x
  3. Step 3: Cross multiply
    170,525.94x = 255,570 × 81,646.26
  4. Step 4: Simplify right side
    170,525.94x = 20,866,334,668.20
  5. Step 5: Solve for x
    x = 20,866,334,668.20/170,525.94
  6. Step 6: Final answer
    x = 122,364.58

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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.