Finding the Fourth Proportional to 163,932.80, 245,745.60 and 128,374.40
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Solution
The fourth proportional to 163,932.80, 245,745.60 and 128,374.40 is: 192,441.32
Step by Step Solution
- Step 1: Write the proportion equation
163,932.80 : 245,745.60 = 128,374.40 : x - Step 2: Convert to fraction form
163,932.80/245,745.60 = 128,374.40/x - Step 3: Cross multiply
163,932.80x = 245,745.60 × 128,374.40 - Step 4: Simplify right side
163,932.80x = 31,547,443,952.64 - Step 5: Solve for x
x = 31,547,443,952.64/163,932.80 - Step 6: Final answer
x = 192,441.32
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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.