Finding the Fourth Proportional to 125,279,591.61, 172,889,767.97 and 72,355,316.10
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Solution
The fourth proportional to 125,279,591.61, 172,889,767.97 and 72,355,316.10 is: 99,852,606.89
Step by Step Solution
- Step 1: Write the proportion equation
125,279,591.61 : 172,889,767.97 = 72,355,316.10 : x - Step 2: Convert to fraction form
125,279,591.61/172,889,767.97 = 72,355,316.10/x - Step 3: Cross multiply
125,279,591.61x = 172,889,767.97 × 72,355,316.10 - Step 4: Simplify right side
125,279,591.61x = 12,509,493,811,925,004 - Step 5: Solve for x
x = 12,509,493,811,925,004/125,279,591.61 - Step 6: Final answer
x = 99,852,606.89
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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.