Finding the Fourth Proportional to 158,920.53, 219,312.14 and 86,324.09
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Solution
The fourth proportional to 158,920.53, 219,312.14 and 86,324.09 is: 119,128.23
Step by Step Solution
- Step 1: Write the proportion equation
158,920.53 : 219,312.14 = 86,324.09 : x - Step 2: Convert to fraction form
158,920.53/219,312.14 = 86,324.09/x - Step 3: Cross multiply
158,920.53x = 219,312.14 × 86,324.09 - Step 4: Simplify right side
158,920.53x = 18,931,921,675.54 - Step 5: Solve for x
x = 18,931,921,675.54/158,920.53 - Step 6: Final answer
x = 119,128.23
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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.