Finding the Fourth Proportional to 128,603.39, 192,671.81 and 94,952.75
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Solution
The fourth proportional to 128,603.39, 192,671.81 and 94,952.75 is: 142,256.89
Step by Step Solution
- Step 1: Write the proportion equation
128,603.39 : 192,671.81 = 94,952.75 : x - Step 2: Convert to fraction form
128,603.39/192,671.81 = 94,952.75/x - Step 3: Cross multiply
128,603.39x = 192,671.81 × 94,952.75 - Step 4: Simplify right side
128,603.39x = 18,294,717,732.21 - Step 5: Solve for x
x = 18,294,717,732.21/128,603.39 - Step 6: Final answer
x = 142,256.89
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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.