Finding the Fourth Proportional to 117,689,393.12, 162,397,253.28 and 65,465,232.80
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Solution
The fourth proportional to 117,689,393.12, 162,397,253.28 and 65,465,232.80 is: 90,334,172.95
Step by Step Solution
- Step 1: Write the proportion equation
117,689,393.12 : 162,397,253.28 = 65,465,232.80 : x - Step 2: Convert to fraction form
117,689,393.12/162,397,253.28 = 65,465,232.80/x - Step 3: Cross multiply
117,689,393.12x = 162,397,253.28 × 65,465,232.80 - Step 4: Simplify right side
117,689,393.12x = 10,631,373,992,055,764 - Step 5: Solve for x
x = 10,631,373,992,055,764/117,689,393.12 - Step 6: Final answer
x = 90,334,172.95
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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.