Finding the Fourth Proportional to 165,931,886.38, 228,985,968.70 and 91,592,427.12
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Solution
The fourth proportional to 165,931,886.38, 228,985,968.70 and 91,592,427.12 is: 126,397,530.38
Step by Step Solution
- Step 1: Write the proportion equation
165,931,886.38 : 228,985,968.70 = 91,592,427.12 : x - Step 2: Convert to fraction form
165,931,886.38/228,985,968.70 = 91,592,427.12/x - Step 3: Cross multiply
165,931,886.38x = 228,985,968.70 × 91,592,427.12 - Step 4: Simplify right side
165,931,886.38x = 20,973,380,649,657,352 - Step 5: Solve for x
x = 20,973,380,649,657,352/165,931,886.38 - Step 6: Final answer
x = 126,397,530.38
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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.