Finding the Fourth Proportional to 159,070.80, 219,515.35 and 86,471.28
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Solution
The fourth proportional to 159,070.80, 219,515.35 and 86,471.28 is: 119,329.09
Step by Step Solution
- Step 1: Write the proportion equation
159,070.80 : 219,515.35 = 86,471.28 : x - Step 2: Convert to fraction form
159,070.80/219,515.35 = 86,471.28/x - Step 3: Cross multiply
159,070.80x = 219,515.35 × 86,471.28 - Step 4: Simplify right side
159,070.80x = 18,981,773,077.97 - Step 5: Solve for x
x = 18,981,773,077.97/159,070.80 - Step 6: Final answer
x = 119,329.09
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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.