Finding the Fourth Proportional to 121,428,336.11, 167,572,433.36 and 66,424,193.15
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Solution
The fourth proportional to 121,428,336.11, 167,572,433.36 and 66,424,193.15 is: 91,666,113.83
Step by Step Solution
- Step 1: Write the proportion equation
121,428,336.11 : 167,572,433.36 = 66,424,193.15 : x - Step 2: Convert to fraction form
121,428,336.11/167,572,433.36 = 66,424,193.15/x - Step 3: Cross multiply
121,428,336.11x = 167,572,433.36 × 66,424,193.15 - Step 4: Simplify right side
121,428,336.11x = 11,130,863,679,788,022 - Step 5: Solve for x
x = 11,130,863,679,788,022/121,428,336.11 - Step 6: Final answer
x = 91,666,113.83
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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.