Finding the Fourth Proportional to 148,889.63, 205,467.69 and 81,821.63
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Solution
The fourth proportional to 148,889.63, 205,467.69 and 81,821.63 is: 112,913.85
Step by Step Solution
- Step 1: Write the proportion equation
148,889.63 : 205,467.69 = 81,821.63 : x - Step 2: Convert to fraction form
148,889.63/205,467.69 = 81,821.63/x - Step 3: Cross multiply
148,889.63x = 205,467.69 × 81,821.63 - Step 4: Simplify right side
148,889.63x = 16,811,701,308.13 - Step 5: Solve for x
x = 16,811,701,308.13/148,889.63 - Step 6: Final answer
x = 112,913.85
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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.