Finding the Fourth Proportional to 149,768,877.18, 206,677,084.41 and 83,689,918.42
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Solution
The fourth proportional to 149,768,877.18, 206,677,084.41 and 83,689,918.42 is: 115,489,871.18
Step by Step Solution
- Step 1: Write the proportion equation
149,768,877.18 : 206,677,084.41 = 83,689,918.42 : x - Step 2: Convert to fraction form
149,768,877.18/206,677,084.41 = 83,689,918.42/x - Step 3: Cross multiply
149,768,877.18x = 206,677,084.41 × 83,689,918.42 - Step 4: Simplify right side
149,768,877.18x = 17,296,788,333,427,180 - Step 5: Solve for x
x = 17,296,788,333,427,180/149,768,877.18 - Step 6: Final answer
x = 115,489,871.18
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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.