Finding the Fourth Proportional to 128,715,365.70, 193,073,048.55 and 118,133,784.90
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Solution
The fourth proportional to 128,715,365.70, 193,073,048.55 and 118,133,784.90 is: 177,200,677.35
Step by Step Solution
- Step 1: Write the proportion equation
128,715,365.70 : 193,073,048.55 = 118,133,784.90 : x - Step 2: Convert to fraction form
128,715,365.70/193,073,048.55 = 118,133,784.90/x - Step 3: Cross multiply
128,715,365.70x = 193,073,048.55 × 118,133,784.90 - Step 4: Simplify right side
128,715,365.70x = 22,808,449,987,392,960 - Step 5: Solve for x
x = 22,808,449,987,392,960/128,715,365.70 - Step 6: Final answer
x = 177,200,677.35
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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.