Finding the Fourth Proportional to 133,590.96, 199,431.44 and 128,918.32
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Solution
The fourth proportional to 133,590.96, 199,431.44 and 128,918.32 is: 192,455.88
Step by Step Solution
- Step 1: Write the proportion equation
133,590.96 : 199,431.44 = 128,918.32 : x - Step 2: Convert to fraction form
133,590.96/199,431.44 = 128,918.32/x - Step 3: Cross multiply
133,590.96x = 199,431.44 × 128,918.32 - Step 4: Simplify right side
133,590.96x = 25,710,366,199.98 - Step 5: Solve for x
x = 25,710,366,199.98/133,590.96 - Step 6: Final answer
x = 192,455.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.