Finding the Fourth Proportional to 128,974,092.99, 177,976,186.14 and 71,027,340.99
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Solution
The fourth proportional to 128,974,092.99, 177,976,186.14 and 71,027,340.99 is: 98,013,290.64
Step by Step Solution
- Step 1: Write the proportion equation
128,974,092.99 : 177,976,186.14 = 71,027,340.99 : x - Step 2: Convert to fraction form
128,974,092.99/177,976,186.14 = 71,027,340.99/x - Step 3: Cross multiply
128,974,092.99x = 177,976,186.14 × 71,027,340.99 - Step 4: Simplify right side
128,974,092.99x = 12,641,175,261,065,490 - Step 5: Solve for x
x = 12,641,175,261,065,490/128,974,092.99 - Step 6: Final answer
x = 98,013,290.64
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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.