Home / 121,556.37-167,793.75-91,428.69

Finding the Fourth Proportional to 121,556.37, 167,793.75 and 91,428.69

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Solution

The fourth proportional to 121,556.37, 167,793.75 and 91,428.69 is: 126,206.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,556.37 : 167,793.75 = 91,428.69 : x
  2. Step 2: Convert to fraction form
    121,556.37/167,793.75 = 91,428.69/x
  3. Step 3: Cross multiply
    121,556.37x = 167,793.75 × 91,428.69
  4. Step 4: Simplify right side
    121,556.37x = 15,341,162,752.69
  5. Step 5: Solve for x
    x = 15,341,162,752.69/121,556.37
  6. Step 6: Final answer
    x = 126,206.16

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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.