Finding the Fourth Proportional to 129,927,837.36, 194,903,736.12 and 42,489,807.90
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Solution
The fourth proportional to 129,927,837.36, 194,903,736.12 and 42,489,807.90 is: 63,738,629.65
Step by Step Solution
- Step 1: Write the proportion equation
129,927,837.36 : 194,903,736.12 = 42,489,807.90 : x - Step 2: Convert to fraction form
129,927,837.36/194,903,736.12 = 42,489,807.90/x - Step 3: Cross multiply
129,927,837.36x = 194,903,736.12 × 42,489,807.90 - Step 4: Simplify right side
129,927,837.36x = 8,281,422,306,731,091 - Step 5: Solve for x
x = 8,281,422,306,731,091/129,927,837.36 - Step 6: Final answer
x = 63,738,629.65
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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.