Finding the Fourth Proportional to 137,590.36, 189,794.07 and 86,522.09
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Solution
The fourth proportional to 137,590.36, 189,794.07 and 86,522.09 is: 119,349.78
Step by Step Solution
- Step 1: Write the proportion equation
137,590.36 : 189,794.07 = 86,522.09 : x - Step 2: Convert to fraction form
137,590.36/189,794.07 = 86,522.09/x - Step 3: Cross multiply
137,590.36x = 189,794.07 × 86,522.09 - Step 4: Simplify right side
137,590.36x = 16,421,378,657.04 - Step 5: Solve for x
x = 16,421,378,657.04/137,590.36 - Step 6: Final answer
x = 119,349.78
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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.