Finding the Fourth Proportional to 139,622.80, 209,328.72 and 69,551.68
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Solution
The fourth proportional to 139,622.80, 209,328.72 and 69,551.68 is: 104,274.98
Step by Step Solution
- Step 1: Write the proportion equation
139,622.80 : 209,328.72 = 69,551.68 : x - Step 2: Convert to fraction form
139,622.80/209,328.72 = 69,551.68/x - Step 3: Cross multiply
139,622.80x = 209,328.72 × 69,551.68 - Step 4: Simplify right side
139,622.80x = 14,559,164,148.25 - Step 5: Solve for x
x = 14,559,164,148.25/139,622.80 - Step 6: Final answer
x = 104,274.98
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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.