Finding the Fourth Proportional to 70,769.15, 106,153.72 and 18,178.68
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Solution
The fourth proportional to 70,769.15, 106,153.72 and 18,178.68 is: 27,268.02
Step by Step Solution
- Step 1: Write the proportion equation
70,769.15 : 106,153.72 = 18,178.68 : x - Step 2: Convert to fraction form
70,769.15/106,153.72 = 18,178.68/x - Step 3: Cross multiply
70,769.15x = 106,153.72 × 18,178.68 - Step 4: Simplify right side
70,769.15x = 1,929,734,461.24 - Step 5: Solve for x
x = 1,929,734,461.24/70,769.15 - Step 6: Final answer
x = 27,268.02
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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.