Finding the Fourth Proportional to 122,929.50, 169,650.53 and 74,536.06
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Solution
The fourth proportional to 122,929.50, 169,650.53 and 74,536.06 is: 102,864.50
Step by Step Solution
- Step 1: Write the proportion equation
122,929.50 : 169,650.53 = 74,536.06 : x - Step 2: Convert to fraction form
122,929.50/169,650.53 = 74,536.06/x - Step 3: Cross multiply
122,929.50x = 169,650.53 × 74,536.06 - Step 4: Simplify right side
122,929.50x = 12,645,082,083.11 - Step 5: Solve for x
x = 12,645,082,083.11/122,929.50 - Step 6: Final answer
x = 102,864.50
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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.