Finding the Fourth Proportional to 128,889,765.10, 193,166,686.05 and 52,149,976.30
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Solution
The fourth proportional to 128,889,765.10, 193,166,686.05 and 52,149,976.30 is: 78,157,005.65
Step by Step Solution
- Step 1: Write the proportion equation
128,889,765.10 : 193,166,686.05 = 52,149,976.30 : x - Step 2: Convert to fraction form
128,889,765.10/193,166,686.05 = 52,149,976.30/x - Step 3: Cross multiply
128,889,765.10x = 193,166,686.05 × 52,149,976.30 - Step 4: Simplify right side
128,889,765.10x = 10,073,638,099,457,040 - Step 5: Solve for x
x = 10,073,638,099,457,040/128,889,765.10 - Step 6: Final answer
x = 78,157,005.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.