Finding the Fourth Proportional to 128,317,406.64, 192,399,244.80 and 40,841,138.52
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Solution
The fourth proportional to 128,317,406.64, 192,399,244.80 and 40,841,138.52 is: 61,237,242.97
Step by Step Solution
- Step 1: Write the proportion equation
128,317,406.64 : 192,399,244.80 = 40,841,138.52 : x - Step 2: Convert to fraction form
128,317,406.64/192,399,244.80 = 40,841,138.52/x - Step 3: Cross multiply
128,317,406.64x = 192,399,244.80 × 40,841,138.52 - Step 4: Simplify right side
128,317,406.64x = 7,857,804,208,020,191 - Step 5: Solve for x
x = 7,857,804,208,020,191/128,317,406.64 - Step 6: Final answer
x = 61,237,242.97
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.