Finding the Fourth Proportional to 151,389,336.97, 208,917,369.09 and 81,774,718.54
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Solution
The fourth proportional to 151,389,336.97, 208,917,369.09 and 81,774,718.54 is: 112,849,156.99
Step by Step Solution
- Step 1: Write the proportion equation
151,389,336.97 : 208,917,369.09 = 81,774,718.54 : x - Step 2: Convert to fraction form
151,389,336.97/208,917,369.09 = 81,774,718.54/x - Step 3: Cross multiply
151,389,336.97x = 208,917,369.09 × 81,774,718.54 - Step 4: Simplify right side
151,389,336.97x = 17,084,159,054,820,532 - Step 5: Solve for x
x = 17,084,159,054,820,532/151,389,336.97 - Step 6: Final answer
x = 112,849,156.99
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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.