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Finding the Fourth Proportional to 168,878.51, 253,317.56 and 80,083.57

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Solution

The fourth proportional to 168,878.51, 253,317.56 and 80,083.57 is: 120,125.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,878.51 : 253,317.56 = 80,083.57 : x
  2. Step 2: Convert to fraction form
    168,878.51/253,317.56 = 80,083.57/x
  3. Step 3: Cross multiply
    168,878.51x = 253,317.56 × 80,083.57
  4. Step 4: Simplify right side
    168,878.51x = 20,286,574,548.49
  5. Step 5: Solve for x
    x = 20,286,574,548.49/168,878.51
  6. Step 6: Final answer
    x = 120,125.26

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1.5x scale

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.