Finding the Fourth Proportional to 133,242.15, 183,876.44 and 79,516.74
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Solution
The fourth proportional to 133,242.15, 183,876.44 and 79,516.74 is: 109,734.45
Step by Step Solution
- Step 1: Write the proportion equation
133,242.15 : 183,876.44 = 79,516.74 : x - Step 2: Convert to fraction form
133,242.15/183,876.44 = 79,516.74/x - Step 3: Cross multiply
133,242.15x = 183,876.44 × 79,516.74 - Step 4: Simplify right side
133,242.15x = 14,621,254,674.02 - Step 5: Solve for x
x = 14,621,254,674.02/133,242.15 - Step 6: Final answer
x = 109,734.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.