Finding the Fourth Proportional to 206,688,461.70, 310,032,692.55 and 91,897,205.70
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Solution
The fourth proportional to 206,688,461.70, 310,032,692.55 and 91,897,205.70 is: 137,845,808.55
Step by Step Solution
- Step 1: Write the proportion equation
206,688,461.70 : 310,032,692.55 = 91,897,205.70 : x - Step 2: Convert to fraction form
206,688,461.70/310,032,692.55 = 91,897,205.70/x - Step 3: Cross multiply
206,688,461.70x = 310,032,692.55 × 91,897,205.70 - Step 4: Simplify right side
206,688,461.70x = 28,491,138,120,992,208 - Step 5: Solve for x
x = 28,491,138,120,992,208/206,688,461.70 - Step 6: Final answer
x = 137,845,808.55
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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.