Home / 210,795.74-290,890.82-120,180.89

Finding the Fourth Proportional to 210,795.74, 290,890.82 and 120,180.89

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Solution

The fourth proportional to 210,795.74, 290,890.82 and 120,180.89 is: 165,845.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,795.74 : 290,890.82 = 120,180.89 : x
  2. Step 2: Convert to fraction form
    210,795.74/290,890.82 = 120,180.89/x
  3. Step 3: Cross multiply
    210,795.74x = 290,890.82 × 120,180.89
  4. Step 4: Simplify right side
    210,795.74x = 34,959,517,511.97
  5. Step 5: Solve for x
    x = 34,959,517,511.97/210,795.74
  6. Step 6: Final answer
    x = 165,845.46

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1.5x scale

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.