Finding the Fourth Proportional to 153,322.05, 211,582.76 and 85,337.94
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Solution
The fourth proportional to 153,322.05, 211,582.76 and 85,337.94 is: 117,765.43
Step by Step Solution
- Step 1: Write the proportion equation
153,322.05 : 211,582.76 = 85,337.94 : x - Step 2: Convert to fraction form
153,322.05/211,582.76 = 85,337.94/x - Step 3: Cross multiply
153,322.05x = 211,582.76 × 85,337.94 - Step 4: Simplify right side
153,322.05x = 18,056,036,877.91 - Step 5: Solve for x
x = 18,056,036,877.91/153,322.05 - Step 6: Final answer
x = 117,765.43
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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.