Home / 121,021.86-181,407.72-46,121.91

Finding the Fourth Proportional to 121,021.86, 181,407.72 and 46,121.91

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Solution

The fourth proportional to 121,021.86, 181,407.72 and 46,121.91 is: 69,135.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,021.86 : 181,407.72 = 46,121.91 : x
  2. Step 2: Convert to fraction form
    121,021.86/181,407.72 = 46,121.91/x
  3. Step 3: Cross multiply
    121,021.86x = 181,407.72 × 46,121.91
  4. Step 4: Simplify right side
    121,021.86x = 8,366,869,768.39
  5. Step 5: Solve for x
    x = 8,366,869,768.39/121,021.86
  6. Step 6: Final answer
    x = 69,135.19

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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.