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Finding the Fourth Proportional to 207,647.57, 286,556.33 and 122,763.89

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Solution

The fourth proportional to 207,647.57, 286,556.33 and 122,763.89 is: 169,415.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,647.57 : 286,556.33 = 122,763.89 : x
  2. Step 2: Convert to fraction form
    207,647.57/286,556.33 = 122,763.89/x
  3. Step 3: Cross multiply
    207,647.57x = 286,556.33 × 122,763.89
  4. Step 4: Simplify right side
    207,647.57x = 35,178,769,774.92
  5. Step 5: Solve for x
    x = 35,178,769,774.92/207,647.57
  6. Step 6: Final answer
    x = 169,415.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.