Finding the Fourth Proportional to 129,326,470.20, 193,989,705.30 and 115,296,427.80
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Solution
The fourth proportional to 129,326,470.20, 193,989,705.30 and 115,296,427.80 is: 172,944,641.70
Step by Step Solution
- Step 1: Write the proportion equation
129,326,470.20 : 193,989,705.30 = 115,296,427.80 : x - Step 2: Convert to fraction form
129,326,470.20/193,989,705.30 = 115,296,427.80/x - Step 3: Cross multiply
129,326,470.20x = 193,989,705.30 × 115,296,427.80 - Step 4: Simplify right side
129,326,470.20x = 22,366,320,051,064,728 - Step 5: Solve for x
x = 22,366,320,051,064,728/129,326,470.20 - Step 6: Final answer
x = 172,944,641.70
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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.