Finding the Fourth Proportional to 154,818.01, 213,631.77 and 86,820.99
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Solution
The fourth proportional to 154,818.01, 213,631.77 and 86,820.99 is: 119,803.38
Step by Step Solution
- Step 1: Write the proportion equation
154,818.01 : 213,631.77 = 86,820.99 : x - Step 2: Convert to fraction form
154,818.01/213,631.77 = 86,820.99/x - Step 3: Cross multiply
154,818.01x = 213,631.77 × 86,820.99 - Step 4: Simplify right side
154,818.01x = 18,547,720,531.63 - Step 5: Solve for x
x = 18,547,720,531.63/154,818.01 - Step 6: Final answer
x = 119,803.38
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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.