Finding the Fourth Proportional to 128,941,064.40, 193,411,596.60 and 121,376,571.60
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Solution
The fourth proportional to 128,941,064.40, 193,411,596.60 and 121,376,571.60 is: 182,064,857.40
Step by Step Solution
- Step 1: Write the proportion equation
128,941,064.40 : 193,411,596.60 = 121,376,571.60 : x - Step 2: Convert to fraction form
128,941,064.40/193,411,596.60 = 121,376,571.60/x - Step 3: Cross multiply
128,941,064.40x = 193,411,596.60 × 121,376,571.60 - Step 4: Simplify right side
128,941,064.40x = 23,475,636,502,990,216 - Step 5: Solve for x
x = 23,475,636,502,990,216/128,941,064.40 - Step 6: Final answer
x = 182,064,857.40
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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.