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Finding the Fourth Proportional to 172,131.16, 258,097.40 and 66,827.11

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Solution

The fourth proportional to 172,131.16, 258,097.40 and 66,827.11 is: 100,202.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,131.16 : 258,097.40 = 66,827.11 : x
  2. Step 2: Convert to fraction form
    172,131.16/258,097.40 = 66,827.11/x
  3. Step 3: Cross multiply
    172,131.16x = 258,097.40 × 66,827.11
  4. Step 4: Simplify right side
    172,131.16x = 17,247,902,050.03
  5. Step 5: Solve for x
    x = 17,247,902,050.03/172,131.16
  6. Step 6: Final answer
    x = 100,202.09

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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.