Finding the Fourth Proportional to 138,586,936.66, 191,247,657.69 and 76,705,946.62
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Solution
The fourth proportional to 138,586,936.66, 191,247,657.69 and 76,705,946.62 is: 105,852,925.07
Step by Step Solution
- Step 1: Write the proportion equation
138,586,936.66 : 191,247,657.69 = 76,705,946.62 : x - Step 2: Convert to fraction form
138,586,936.66/191,247,657.69 = 76,705,946.62/x - Step 3: Cross multiply
138,586,936.66x = 191,247,657.69 × 76,705,946.62 - Step 4: Simplify right side
138,586,936.66x = 14,669,832,621,969,174 - Step 5: Solve for x
x = 14,669,832,621,969,174/138,586,936.66 - Step 6: Final answer
x = 105,852,925.07
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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.