Home / 172,427.54-258,670.47-78,940.58

Finding the Fourth Proportional to 172,427.54, 258,670.47 and 78,940.58

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Solution

The fourth proportional to 172,427.54, 258,670.47 and 78,940.58 is: 118,424.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,427.54 : 258,670.47 = 78,940.58 : x
  2. Step 2: Convert to fraction form
    172,427.54/258,670.47 = 78,940.58/x
  3. Step 3: Cross multiply
    172,427.54x = 258,670.47 × 78,940.58
  4. Step 4: Simplify right side
    172,427.54x = 20,419,596,930.67
  5. Step 5: Solve for x
    x = 20,419,596,930.67/172,427.54
  6. Step 6: Final answer
    x = 118,424.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.