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Finding the Fourth Proportional to 122,133, 183,480.17 and 86,682.34

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Solution

The fourth proportional to 122,133, 183,480.17 and 86,682.34 is: 130,222.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,133 : 183,480.17 = 86,682.34 : x
  2. Step 2: Convert to fraction form
    122,133/183,480.17 = 86,682.34/x
  3. Step 3: Cross multiply
    122,133x = 183,480.17 × 86,682.34
  4. Step 4: Simplify right side
    122,133x = 15,904,490,479.20
  5. Step 5: Solve for x
    x = 15,904,490,479.20/122,133
  6. Step 6: Final answer
    x = 130,222.71

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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.