Finding the Fourth Proportional to 159,612.13, 220,266.17 and 87,994.68
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Solution
The fourth proportional to 159,612.13, 220,266.17 and 87,994.68 is: 121,433.45
Step by Step Solution
- Step 1: Write the proportion equation
159,612.13 : 220,266.17 = 87,994.68 : x - Step 2: Convert to fraction form
159,612.13/220,266.17 = 87,994.68/x - Step 3: Cross multiply
159,612.13x = 220,266.17 × 87,994.68 - Step 4: Simplify right side
159,612.13x = 19,382,251,143.98 - Step 5: Solve for x
x = 19,382,251,143.98/159,612.13 - Step 6: Final answer
x = 121,433.45
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1.5x scale
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.