Finding the Fourth Proportional to 136,590.80, 205,052.60 and 86,670.80
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Solution
The fourth proportional to 136,590.80, 205,052.60 and 86,670.80 is: 130,111.79
Step by Step Solution
- Step 1: Write the proportion equation
136,590.80 : 205,052.60 = 86,670.80 : x - Step 2: Convert to fraction form
136,590.80/205,052.60 = 86,670.80/x - Step 3: Cross multiply
136,590.80x = 205,052.60 × 86,670.80 - Step 4: Simplify right side
136,590.80x = 17,772,072,884.08 - Step 5: Solve for x
x = 17,772,072,884.08/136,590.80 - Step 6: Final answer
x = 130,111.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.