Home / 209,664.88-289,292.40-124,765.36

Finding the Fourth Proportional to 209,664.88, 289,292.40 and 124,765.36

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Solution

The fourth proportional to 209,664.88, 289,292.40 and 124,765.36 is: 172,149.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,664.88 : 289,292.40 = 124,765.36 : x
  2. Step 2: Convert to fraction form
    209,664.88/289,292.40 = 124,765.36/x
  3. Step 3: Cross multiply
    209,664.88x = 289,292.40 × 124,765.36
  4. Step 4: Simplify right side
    209,664.88x = 36,093,670,431.26
  5. Step 5: Solve for x
    x = 36,093,670,431.26/209,664.88
  6. Step 6: Final answer
    x = 172,149.34

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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.