Finding the Fourth Proportional to 137,297,416.91, 189,471,825.74 and 74,574,739.46
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Solution
The fourth proportional to 137,297,416.91, 189,471,825.74 and 74,574,739.46 is: 102,913,895.68
Step by Step Solution
- Step 1: Write the proportion equation
137,297,416.91 : 189,471,825.74 = 74,574,739.46 : x - Step 2: Convert to fraction form
137,297,416.91/189,471,825.74 = 74,574,739.46/x - Step 3: Cross multiply
137,297,416.91x = 189,471,825.74 × 74,574,739.46 - Step 4: Simplify right side
137,297,416.91x = 14,129,812,040,231,140 - Step 5: Solve for x
x = 14,129,812,040,231,140/137,297,416.91 - Step 6: Final answer
x = 102,913,895.68
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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.