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Finding the Fourth Proportional to 172,667.45, 259,019.18 and 66,051.20

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Solution

The fourth proportional to 172,667.45, 259,019.18 and 66,051.20 is: 99,083.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,667.45 : 259,019.18 = 66,051.20 : x
  2. Step 2: Convert to fraction form
    172,667.45/259,019.18 = 66,051.20/x
  3. Step 3: Cross multiply
    172,667.45x = 259,019.18 × 66,051.20
  4. Step 4: Simplify right side
    172,667.45x = 17,108,528,474.69
  5. Step 5: Solve for x
    x = 17,108,528,474.69/172,667.45
  6. Step 6: Final answer
    x = 99,083.69

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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.