Finding the Fourth Proportional to 122,720.18, 169,347.66 and 69,001.99
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Solution
The fourth proportional to 122,720.18, 169,347.66 and 69,001.99 is: 95,219.27
Step by Step Solution
- Step 1: Write the proportion equation
122,720.18 : 169,347.66 = 69,001.99 : x - Step 2: Convert to fraction form
122,720.18/169,347.66 = 69,001.99/x - Step 3: Cross multiply
122,720.18x = 169,347.66 × 69,001.99 - Step 4: Simplify right side
122,720.18x = 11,685,326,200.43 - Step 5: Solve for x
x = 11,685,326,200.43/122,720.18 - Step 6: Final answer
x = 95,219.27
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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.