Finding the Fourth Proportional to 136,728,803.79, 205,092,901.62 and 105,649,652.70
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Solution
The fourth proportional to 136,728,803.79, 205,092,901.62 and 105,649,652.70 is: 158,474,244.10
Step by Step Solution
- Step 1: Write the proportion equation
136,728,803.79 : 205,092,901.62 = 105,649,652.70 : x - Step 2: Convert to fraction form
136,728,803.79/205,092,901.62 = 105,649,652.70/x - Step 3: Cross multiply
136,728,803.79x = 205,092,901.62 × 105,649,652.70 - Step 4: Simplify right side
136,728,803.79x = 21,667,993,827,388,268 - Step 5: Solve for x
x = 21,667,993,827,388,268/136,728,803.79 - Step 6: Final answer
x = 158,474,244.10
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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.