Finding the Fourth Proportional to 128,634,478.53, 177,516,704.28 and 69,897,142.44
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Solution
The fourth proportional to 128,634,478.53, 177,516,704.28 and 69,897,142.44 is: 96,458,667.27
Step by Step Solution
- Step 1: Write the proportion equation
128,634,478.53 : 177,516,704.28 = 69,897,142.44 : x - Step 2: Convert to fraction form
128,634,478.53/177,516,704.28 = 69,897,142.44/x - Step 3: Cross multiply
128,634,478.53x = 177,516,704.28 × 69,897,142.44 - Step 4: Simplify right side
128,634,478.53x = 12,407,910,364,538,518 - Step 5: Solve for x
x = 12,407,910,364,538,518/128,634,478.53 - Step 6: Final answer
x = 96,458,667.27
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.