Finding the Fourth Proportional to 91,864,232.30, 137,796,348.45 and 86,195,528.30
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Solution
The fourth proportional to 91,864,232.30, 137,796,348.45 and 86,195,528.30 is: 129,293,292.45
Step by Step Solution
- Step 1: Write the proportion equation
91,864,232.30 : 137,796,348.45 = 86,195,528.30 : x - Step 2: Convert to fraction form
91,864,232.30/137,796,348.45 = 86,195,528.30/x - Step 3: Cross multiply
91,864,232.30x = 137,796,348.45 × 86,195,528.30 - Step 4: Simplify right side
91,864,232.30x = 11,877,429,052,458,634 - Step 5: Solve for x
x = 11,877,429,052,458,634/91,864,232.30 - Step 6: Final answer
x = 129,293,292.45
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1.5x scale
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.