Finding the Fourth Proportional to 155,408,842.11, 214,458,579.81 and 85,792,728.18
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Solution
The fourth proportional to 155,408,842.11, 214,458,579.81 and 85,792,728.18 is: 118,390,861.12
Step by Step Solution
- Step 1: Write the proportion equation
155,408,842.11 : 214,458,579.81 = 85,792,728.18 : x - Step 2: Convert to fraction form
155,408,842.11/214,458,579.81 = 85,792,728.18/x - Step 3: Cross multiply
155,408,842.11x = 214,458,579.81 × 85,792,728.18 - Step 4: Simplify right side
155,408,842.11x = 18,398,986,643,508,168 - Step 5: Solve for x
x = 18,398,986,643,508,168/155,408,842.11 - Step 6: Final answer
x = 118,390,861.12
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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.