Finding the Fourth Proportional to 148,725.86, 205,242.02 and 80,742.99
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Solution
The fourth proportional to 148,725.86, 205,242.02 and 80,742.99 is: 111,425.51
Step by Step Solution
- Step 1: Write the proportion equation
148,725.86 : 205,242.02 = 80,742.99 : x - Step 2: Convert to fraction form
148,725.86/205,242.02 = 80,742.99/x - Step 3: Cross multiply
148,725.86x = 205,242.02 × 80,742.99 - Step 4: Simplify right side
148,725.86x = 16,571,853,964.72 - Step 5: Solve for x
x = 16,571,853,964.72/148,725.86 - Step 6: Final answer
x = 111,425.51
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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.