Finding the Fourth Proportional to 128,317,403.21, 192,399,239.65 and 40,841,135.09
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Solution
The fourth proportional to 128,317,403.21, 192,399,239.65 and 40,841,135.09 is: 61,237,237.82
Step by Step Solution
- Step 1: Write the proportion equation
128,317,403.21 : 192,399,239.65 = 40,841,135.09 : x - Step 2: Convert to fraction form
128,317,403.21/192,399,239.65 = 40,841,135.09/x - Step 3: Cross multiply
128,317,403.21x = 192,399,239.65 × 40,841,135.09 - Step 4: Simplify right side
128,317,403.21x = 7,857,803,336,694,836 - Step 5: Solve for x
x = 7,857,803,336,694,836/128,317,403.21 - Step 6: Final answer
x = 61,237,237.82
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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.