Finding the Fourth Proportional to 159,535.51, 220,156.17 and 86,939.05
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Solution
The fourth proportional to 159,535.51, 220,156.17 and 86,939.05 is: 119,974.34
Step by Step Solution
- Step 1: Write the proportion equation
159,535.51 : 220,156.17 = 86,939.05 : x - Step 2: Convert to fraction form
159,535.51/220,156.17 = 86,939.05/x - Step 3: Cross multiply
159,535.51x = 220,156.17 × 86,939.05 - Step 4: Simplify right side
159,535.51x = 19,140,167,721.05 - Step 5: Solve for x
x = 19,140,167,721.05/159,535.51 - Step 6: Final answer
x = 119,974.34
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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.