Home / 126,609.54-174,556.80-78,777.42

Finding the Fourth Proportional to 126,609.54, 174,556.80 and 78,777.42

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Solution

The fourth proportional to 126,609.54, 174,556.80 and 78,777.42 is: 108,610.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,609.54 : 174,556.80 = 78,777.42 : x
  2. Step 2: Convert to fraction form
    126,609.54/174,556.80 = 78,777.42/x
  3. Step 3: Cross multiply
    126,609.54x = 174,556.80 × 78,777.42
  4. Step 4: Simplify right side
    126,609.54x = 13,751,134,347.46
  5. Step 5: Solve for x
    x = 13,751,134,347.46/126,609.54
  6. Step 6: Final answer
    x = 108,610.57

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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.