Home / 208,939.89-288,362.55-122,894.77

Finding the Fourth Proportional to 208,939.89, 288,362.55 and 122,894.77

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Solution

The fourth proportional to 208,939.89, 288,362.55 and 122,894.77 is: 169,609.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,939.89 : 288,362.55 = 122,894.77 : x
  2. Step 2: Convert to fraction form
    208,939.89/288,362.55 = 122,894.77/x
  3. Step 3: Cross multiply
    208,939.89x = 288,362.55 × 122,894.77
  4. Step 4: Simplify right side
    208,939.89x = 35,438,248,537.96
  5. Step 5: Solve for x
    x = 35,438,248,537.96/208,939.89
  6. Step 6: Final answer
    x = 169,609.78

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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.