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Finding the Fourth Proportional to 207,408.50, 286,239.48 and 125,760.50

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Solution

The fourth proportional to 207,408.50, 286,239.48 and 125,760.50 is: 173,559.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,408.50 : 286,239.48 = 125,760.50 : x
  2. Step 2: Convert to fraction form
    207,408.50/286,239.48 = 125,760.50/x
  3. Step 3: Cross multiply
    207,408.50x = 286,239.48 × 125,760.50
  4. Step 4: Simplify right side
    207,408.50x = 35,997,620,124.54
  5. Step 5: Solve for x
    x = 35,997,620,124.54/207,408.50
  6. Step 6: Final answer
    x = 173,559.04

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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.