Finding the Fourth Proportional to 129,038,486.40, 193,557,729.60 and 106,363,670.40
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Solution
The fourth proportional to 129,038,486.40, 193,557,729.60 and 106,363,670.40 is: 159,545,505.60
Step by Step Solution
- Step 1: Write the proportion equation
129,038,486.40 : 193,557,729.60 = 106,363,670.40 : x - Step 2: Convert to fraction form
129,038,486.40/193,557,729.60 = 106,363,670.40/x - Step 3: Cross multiply
129,038,486.40x = 193,557,729.60 × 106,363,670.40 - Step 4: Simplify right side
129,038,486.40x = 20,587,510,554,546,724 - Step 5: Solve for x
x = 20,587,510,554,546,724/129,038,486.40 - Step 6: Final answer
x = 159,545,505.60
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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.