Finding the Fourth Proportional to 121,738,336.33, 167,980,963.13 and 74,029,252.09
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Solution
The fourth proportional to 121,738,336.33, 167,980,963.13 and 74,029,252.09 is: 102,149,457.93
Step by Step Solution
- Step 1: Write the proportion equation
121,738,336.33 : 167,980,963.13 = 74,029,252.09 : x - Step 2: Convert to fraction form
121,738,336.33/167,980,963.13 = 74,029,252.09/x - Step 3: Cross multiply
121,738,336.33x = 167,980,963.13 × 74,029,252.09 - Step 4: Simplify right side
121,738,336.33x = 12,435,505,065,501,620 - Step 5: Solve for x
x = 12,435,505,065,501,620/121,738,336.33 - Step 6: Final answer
x = 102,149,457.93
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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.