Finding the Fourth Proportional to 212,828,139.09, 319,088,994.25 and 130,777,495.08
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Solution
The fourth proportional to 212,828,139.09, 319,088,994.25 and 130,777,495.08 is: 196,072,096.25
Step by Step Solution
- Step 1: Write the proportion equation
212,828,139.09 : 319,088,994.25 = 130,777,495.08 : x - Step 2: Convert to fraction form
212,828,139.09/319,088,994.25 = 130,777,495.08/x - Step 3: Cross multiply
212,828,139.09x = 319,088,994.25 × 130,777,495.08 - Step 4: Simplify right side
212,828,139.09x = 41,729,659,373,362,192 - Step 5: Solve for x
x = 41,729,659,373,362,192/212,828,139.09 - Step 6: Final answer
x = 196,072,096.25
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.