Finding the Fourth Proportional to 191,639.61, 287,253.01 and 91,587.09
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Solution
The fourth proportional to 191,639.61, 287,253.01 and 91,587.09 is: 137,281.99
Step by Step Solution
- Step 1: Write the proportion equation
191,639.61 : 287,253.01 = 91,587.09 : x - Step 2: Convert to fraction form
191,639.61/287,253.01 = 91,587.09/x - Step 3: Cross multiply
191,639.61x = 287,253.01 × 91,587.09 - Step 4: Simplify right side
191,639.61x = 26,308,667,279.64 - Step 5: Solve for x
x = 26,308,667,279.64/191,639.61 - Step 6: Final answer
x = 137,281.99
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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.