Home / 131,743.65-181,911.03-121,668.39

Finding the Fourth Proportional to 131,743.65, 181,911.03 and 121,668.39

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Solution

The fourth proportional to 131,743.65, 181,911.03 and 121,668.39 is: 167,999.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,743.65 : 181,911.03 = 121,668.39 : x
  2. Step 2: Convert to fraction form
    131,743.65/181,911.03 = 121,668.39/x
  3. Step 3: Cross multiply
    131,743.65x = 181,911.03 × 121,668.39
  4. Step 4: Simplify right side
    131,743.65x = 22,132,822,143.34
  5. Step 5: Solve for x
    x = 22,132,822,143.34/131,743.65
  6. Step 6: Final answer
    x = 167,999.16

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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.