Finding the Fourth Proportional to 157,511,149.20, 217,365,426 and 86,946,799.68
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Solution
The fourth proportional to 157,511,149.20, 217,365,426 and 86,946,799.68 is: 119,986,605.70
Step by Step Solution
- Step 1: Write the proportion equation
157,511,149.20 : 217,365,426 = 86,946,799.68 : x - Step 2: Convert to fraction form
157,511,149.20/217,365,426 = 86,946,799.68/x - Step 3: Cross multiply
157,511,149.20x = 217,365,426 × 86,946,799.68 - Step 4: Simplify right side
157,511,149.20x = 18,899,228,151,779,864 - Step 5: Solve for x
x = 18,899,228,151,779,864/157,511,149.20 - Step 6: Final answer
x = 119,986,605.70
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1.5x scale
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.