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Finding the Fourth Proportional to 122,134, 183,481.67 and 86,683.34

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Solution

The fourth proportional to 122,134, 183,481.67 and 86,683.34 is: 130,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,134 : 183,481.67 = 86,683.34 : x
  2. Step 2: Convert to fraction form
    122,134/183,481.67 = 86,683.34/x
  3. Step 3: Cross multiply
    122,134x = 183,481.67 × 86,683.34
  4. Step 4: Simplify right side
    122,134x = 15,904,803,984.38
  5. Step 5: Solve for x
    x = 15,904,803,984.38/122,134
  6. Step 6: Final answer
    x = 130,224.21

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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.