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Finding the Fourth Proportional to 170,531.94, 255,579 and 81,652.26

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Solution

The fourth proportional to 170,531.94, 255,579 and 81,652.26 is: 122,373.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,531.94 : 255,579 = 81,652.26 : x
  2. Step 2: Convert to fraction form
    170,531.94/255,579 = 81,652.26/x
  3. Step 3: Cross multiply
    170,531.94x = 255,579 × 81,652.26
  4. Step 4: Simplify right side
    170,531.94x = 20,868,602,958.54
  5. Step 5: Solve for x
    x = 20,868,602,958.54/170,531.94
  6. Step 6: Final answer
    x = 122,373.57

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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.