Finding the Fourth Proportional to 172,855.57, 238,455.90 and 115,508.99
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Solution
The fourth proportional to 172,855.57, 238,455.90 and 115,508.99 is: 159,345.74
Step by Step Solution
- Step 1: Write the proportion equation
172,855.57 : 238,455.90 = 115,508.99 : x - Step 2: Convert to fraction form
172,855.57/238,455.90 = 115,508.99/x - Step 3: Cross multiply
172,855.57x = 238,455.90 × 115,508.99 - Step 4: Simplify right side
172,855.57x = 27,543,799,423.37 - Step 5: Solve for x
x = 27,543,799,423.37/172,855.57 - Step 6: Final answer
x = 159,345.74
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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.