Finding the Fourth Proportional to 153,909.36, 212,398.28 and 84,998.62
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Solution
The fourth proportional to 153,909.36, 212,398.28 and 84,998.62 is: 117,299.95
Step by Step Solution
- Step 1: Write the proportion equation
153,909.36 : 212,398.28 = 84,998.62 : x - Step 2: Convert to fraction form
153,909.36/212,398.28 = 84,998.62/x - Step 3: Cross multiply
153,909.36x = 212,398.28 × 84,998.62 - Step 4: Simplify right side
153,909.36x = 18,053,560,690.37 - Step 5: Solve for x
x = 18,053,560,690.37/153,909.36 - Step 6: Final answer
x = 117,299.95
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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.