Finding the Fourth Proportional to 153,508.91, 211,857.80 and 85,536.95
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Solution
The fourth proportional to 153,508.91, 211,857.80 and 85,536.95 is: 118,049.62
Step by Step Solution
- Step 1: Write the proportion equation
153,508.91 : 211,857.80 = 85,536.95 : x - Step 2: Convert to fraction form
153,508.91/211,857.80 = 85,536.95/x - Step 3: Cross multiply
153,508.91x = 211,857.80 × 85,536.95 - Step 4: Simplify right side
153,508.91x = 18,121,668,558.74 - Step 5: Solve for x
x = 18,121,668,558.74/153,508.91 - Step 6: Final answer
x = 118,049.62
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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.