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Finding the Fourth Proportional to 172,068.68, 258,103.03 and 66,912.26

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Solution

The fourth proportional to 172,068.68, 258,103.03 and 66,912.26 is: 100,368.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,068.68 : 258,103.03 = 66,912.26 : x
  2. Step 2: Convert to fraction form
    172,068.68/258,103.03 = 66,912.26/x
  3. Step 3: Cross multiply
    172,068.68x = 258,103.03 × 66,912.26
  4. Step 4: Simplify right side
    172,068.68x = 17,270,257,050.15
  5. Step 5: Solve for x
    x = 17,270,257,050.15/172,068.68
  6. Step 6: Final answer
    x = 100,368.39

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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.