Finding the Fourth Proportional to 91,864,257.80, 137,796,386.70 and 86,195,553.80
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Solution
The fourth proportional to 91,864,257.80, 137,796,386.70 and 86,195,553.80 is: 129,293,330.70
Step by Step Solution
- Step 1: Write the proportion equation
91,864,257.80 : 137,796,386.70 = 86,195,553.80 : x - Step 2: Convert to fraction form
91,864,257.80/137,796,386.70 = 86,195,553.80/x - Step 3: Cross multiply
91,864,257.80x = 137,796,386.70 × 86,195,553.80 - Step 4: Simplify right side
91,864,257.80x = 11,877,435,863,245,454 - Step 5: Solve for x
x = 11,877,435,863,245,454/91,864,257.80 - Step 6: Final answer
x = 129,293,330.70
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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.