Finding the Fourth Proportional to 128,889,744.60, 193,166,655.30 and 52,149,955.80
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Solution
The fourth proportional to 128,889,744.60, 193,166,655.30 and 52,149,955.80 is: 78,156,974.92
Step by Step Solution
- Step 1: Write the proportion equation
128,889,744.60 : 193,166,655.30 = 52,149,955.80 : x - Step 2: Convert to fraction form
128,889,744.60/193,166,655.30 = 52,149,955.80/x - Step 3: Cross multiply
128,889,744.60x = 193,166,655.30 × 52,149,955.80 - Step 4: Simplify right side
128,889,744.60x = 10,073,632,535,928,836 - Step 5: Solve for x
x = 10,073,632,535,928,836/128,889,744.60 - Step 6: Final answer
x = 78,156,974.92
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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.