Finding the Fourth Proportional to 155,987,286.84, 215,259,825.24 and 86,371,173.18
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Solution
The fourth proportional to 155,987,286.84, 215,259,825.24 and 86,371,173.18 is: 119,190,762.41
Step by Step Solution
- Step 1: Write the proportion equation
155,987,286.84 : 215,259,825.24 = 86,371,173.18 : x - Step 2: Convert to fraction form
155,987,286.84/215,259,825.24 = 86,371,173.18/x - Step 3: Cross multiply
155,987,286.84x = 215,259,825.24 × 86,371,173.18 - Step 4: Simplify right side
155,987,286.84x = 18,592,243,644,500,576 - Step 5: Solve for x
x = 18,592,243,644,500,576/155,987,286.84 - Step 6: Final answer
x = 119,190,762.41
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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.