Finding the Fourth Proportional to 139,245,284.64, 192,163,678.68 and 83,499,780.96
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Solution
The fourth proportional to 139,245,284.64, 192,163,678.68 and 83,499,780.96 is: 115,232,807.49
Step by Step Solution
- Step 1: Write the proportion equation
139,245,284.64 : 192,163,678.68 = 83,499,780.96 : x - Step 2: Convert to fraction form
139,245,284.64/192,163,678.68 = 83,499,780.96/x - Step 3: Cross multiply
139,245,284.64x = 192,163,678.68 × 83,499,780.96 - Step 4: Simplify right side
139,245,284.64x = 16,045,625,078,247,822 - Step 5: Solve for x
x = 16,045,625,078,247,822/139,245,284.64 - Step 6: Final answer
x = 115,232,807.49
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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.