Finding the Fourth Proportional to 156,118,942.96, 215,444,394.49 and 85,543,338.24
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Solution
The fourth proportional to 156,118,942.96, 215,444,394.49 and 85,543,338.24 is: 118,049,945.51
Step by Step Solution
- Step 1: Write the proportion equation
156,118,942.96 : 215,444,394.49 = 85,543,338.24 : x - Step 2: Convert to fraction form
156,118,942.96/215,444,394.49 = 85,543,338.24/x - Step 3: Cross multiply
156,118,942.96x = 215,444,394.49 × 85,543,338.24 - Step 4: Simplify right side
156,118,942.96x = 18,429,832,709,770,060 - Step 5: Solve for x
x = 18,429,832,709,770,060/156,118,942.96 - Step 6: Final answer
x = 118,049,945.51
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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.