Finding the Fourth Proportional to 153,326.18, 211,590.14 and 85,341.70
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Solution
The fourth proportional to 153,326.18, 211,590.14 and 85,341.70 is: 117,771.54
Step by Step Solution
- Step 1: Write the proportion equation
153,326.18 : 211,590.14 = 85,341.70 : x - Step 2: Convert to fraction form
153,326.18/211,590.14 = 85,341.70/x - Step 3: Cross multiply
153,326.18x = 211,590.14 × 85,341.70 - Step 4: Simplify right side
153,326.18x = 18,057,461,295.15 - Step 5: Solve for x
x = 18,057,461,295.15/153,326.18 - Step 6: Final answer
x = 117,771.54
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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.