Finding the Fourth Proportional to 139,478,741.91, 192,400,512.26 and 87,177,008.79
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Solution
The fourth proportional to 139,478,741.91, 192,400,512.26 and 87,177,008.79 is: 120,254,175.79
Step by Step Solution
- Step 1: Write the proportion equation
139,478,741.91 : 192,400,512.26 = 87,177,008.79 : x - Step 2: Convert to fraction form
139,478,741.91/192,400,512.26 = 87,177,008.79/x - Step 3: Cross multiply
139,478,741.91x = 192,400,512.26 × 87,177,008.79 - Step 4: Simplify right side
139,478,741.91x = 16,772,901,148,054,638 - Step 5: Solve for x
x = 16,772,901,148,054,638/139,478,741.91 - Step 6: Final answer
x = 120,254,175.79
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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.