Finding the Fourth Proportional to 121,937,580.64, 168,274,045.62 and 66,183,021.08
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Solution
The fourth proportional to 121,937,580.64, 168,274,045.62 and 66,183,021.08 is: 91,332,669.14
Step by Step Solution
- Step 1: Write the proportion equation
121,937,580.64 : 168,274,045.62 = 66,183,021.08 : x - Step 2: Convert to fraction form
121,937,580.64/168,274,045.62 = 66,183,021.08/x - Step 3: Cross multiply
121,937,580.64x = 168,274,045.62 × 66,183,021.08 - Step 4: Simplify right side
121,937,580.64x = 11,136,884,708,485,342 - Step 5: Solve for x
x = 11,136,884,708,485,342/121,937,580.64 - Step 6: Final answer
x = 91,332,669.14
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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.