Finding the Fourth Proportional to 163,619.20, 245,428.80 and 84,887.20
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Solution
The fourth proportional to 163,619.20, 245,428.80 and 84,887.20 is: 127,330.80
Step by Step Solution
- Step 1: Write the proportion equation
163,619.20 : 245,428.80 = 84,887.20 : x - Step 2: Convert to fraction form
163,619.20/245,428.80 = 84,887.20/x - Step 3: Cross multiply
163,619.20x = 245,428.80 × 84,887.20 - Step 4: Simplify right side
163,619.20x = 20,833,763,631.36 - Step 5: Solve for x
x = 20,833,763,631.36/163,619.20 - Step 6: Final answer
x = 127,330.80
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1.5x scale
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.