Home / 121,095.96-181,668.24-42,189

Finding the Fourth Proportional to 121,095.96, 181,668.24 and 42,189

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Solution

The fourth proportional to 121,095.96, 181,668.24 and 42,189 is: 63,291.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,095.96 : 181,668.24 = 42,189 : x
  2. Step 2: Convert to fraction form
    121,095.96/181,668.24 = 42,189/x
  3. Step 3: Cross multiply
    121,095.96x = 181,668.24 × 42,189
  4. Step 4: Simplify right side
    121,095.96x = 7,664,401,377.36
  5. Step 5: Solve for x
    x = 7,664,401,377.36/121,095.96
  6. Step 6: Final answer
    x = 63,291.97

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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.