Finding the Fourth Proportional to 138,605,283.50, 208,112,305.86 and 77,314,192.97
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Solution
The fourth proportional to 138,605,283.50, 208,112,305.86 and 77,314,192.97 is: 116,085,293.20
Step by Step Solution
- Step 1: Write the proportion equation
138,605,283.50 : 208,112,305.86 = 77,314,192.97 : x - Step 2: Convert to fraction form
138,605,283.50/208,112,305.86 = 77,314,192.97/x - Step 3: Cross multiply
138,605,283.50x = 208,112,305.86 × 77,314,192.97 - Step 4: Simplify right side
138,605,283.50x = 16,090,034,973,651,142 - Step 5: Solve for x
x = 16,090,034,973,651,142/138,605,283.50 - Step 6: Final answer
x = 116,085,293.20
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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.