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Finding the Fourth Proportional to 121,220.69, 181,842.77 and 41,315.00

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Solution

The fourth proportional to 121,220.69, 181,842.77 and 41,315.00 is: 61,976.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,220.69 : 181,842.77 = 41,315.00 : x
  2. Step 2: Convert to fraction form
    121,220.69/181,842.77 = 41,315.00/x
  3. Step 3: Cross multiply
    121,220.69x = 181,842.77 × 41,315.00
  4. Step 4: Simplify right side
    121,220.69x = 7,512,833,236.62
  5. Step 5: Solve for x
    x = 7,512,833,236.62/121,220.69
  6. Step 6: Final answer
    x = 61,976.50

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1.5x scale

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.