Finding the Fourth Proportional to 129,678,843.58, 178,958,216.60 and 70,940,247.63
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Solution
The fourth proportional to 129,678,843.58, 178,958,216.60 and 70,940,247.63 is: 97,898,314.41
Step by Step Solution
- Step 1: Write the proportion equation
129,678,843.58 : 178,958,216.60 = 70,940,247.63 : x - Step 2: Convert to fraction form
129,678,843.58/178,958,216.60 = 70,940,247.63/x - Step 3: Cross multiply
129,678,843.58x = 178,958,216.60 × 70,940,247.63 - Step 4: Simplify right side
129,678,843.58x = 12,695,340,200,267,408 - Step 5: Solve for x
x = 12,695,340,200,267,408/129,678,843.58 - Step 6: Final answer
x = 97,898,314.41
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.