Finding the Fourth Proportional to 137,648,883.27, 189,960,474.83 and 74,921,950.68
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Solution
The fourth proportional to 137,648,883.27, 189,960,474.83 and 74,921,950.68 is: 103,395,022.09
Step by Step Solution
- Step 1: Write the proportion equation
137,648,883.27 : 189,960,474.83 = 74,921,950.68 : x - Step 2: Convert to fraction form
137,648,883.27/189,960,474.83 = 74,921,950.68/x - Step 3: Cross multiply
137,648,883.27x = 189,960,474.83 × 74,921,950.68 - Step 4: Simplify right side
137,648,883.27x = 14,232,209,325,988,032 - Step 5: Solve for x
x = 14,232,209,325,988,032/137,648,883.27 - Step 6: Final answer
x = 103,395,022.09
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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.