Finding the Fourth Proportional to 163,636.80, 245,455.20 and 84,775.20
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Solution
The fourth proportional to 163,636.80, 245,455.20 and 84,775.20 is: 127,162.80
Step by Step Solution
- Step 1: Write the proportion equation
163,636.80 : 245,455.20 = 84,775.20 : x - Step 2: Convert to fraction form
163,636.80/245,455.20 = 84,775.20/x - Step 3: Cross multiply
163,636.80x = 245,455.20 × 84,775.20 - Step 4: Simplify right side
163,636.80x = 20,808,513,671.04 - Step 5: Solve for x
x = 20,808,513,671.04/163,636.80 - Step 6: Final answer
x = 127,162.80
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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.