Finding the Fourth Proportional to 121,132,792.73, 167,162,403.62 and 66,128,649.23
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Solution
The fourth proportional to 121,132,792.73, 167,162,403.62 and 66,128,649.23 is: 91,257,071.71
Step by Step Solution
- Step 1: Write the proportion equation
121,132,792.73 : 167,162,403.62 = 66,128,649.23 : x - Step 2: Convert to fraction form
121,132,792.73/167,162,403.62 = 66,128,649.23/x - Step 3: Cross multiply
121,132,792.73x = 167,162,403.62 × 66,128,649.23 - Step 4: Simplify right side
121,132,792.73x = 11,054,223,952,264,208 - Step 5: Solve for x
x = 11,054,223,952,264,208/121,132,792.73 - Step 6: Final answer
x = 91,257,071.71
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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.