Finding the Fourth Proportional to 137,465,922.48, 189,701,639.34 and 74,742,019.62
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Solution
The fourth proportional to 137,465,922.48, 189,701,639.34 and 74,742,019.62 is: 103,143,261.94
Step by Step Solution
- Step 1: Write the proportion equation
137,465,922.48 : 189,701,639.34 = 74,742,019.62 : x - Step 2: Convert to fraction form
137,465,922.48/189,701,639.34 = 74,742,019.62/x - Step 3: Cross multiply
137,465,922.48x = 189,701,639.34 × 74,742,019.62 - Step 4: Simplify right side
137,465,922.48x = 14,178,683,649,496,446 - Step 5: Solve for x
x = 14,178,683,649,496,446/137,465,922.48 - Step 6: Final answer
x = 103,143,261.94
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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.