Finding the Fourth Proportional to 153,417.18, 211,664.97 and 89,709.87
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Solution
The fourth proportional to 153,417.18, 211,664.97 and 89,709.87 is: 123,769.95
Step by Step Solution
- Step 1: Write the proportion equation
153,417.18 : 211,664.97 = 89,709.87 : x - Step 2: Convert to fraction form
153,417.18/211,664.97 = 89,709.87/x - Step 3: Cross multiply
153,417.18x = 211,664.97 × 89,709.87 - Step 4: Simplify right side
153,417.18x = 18,988,436,942.25 - Step 5: Solve for x
x = 18,988,436,942.25/153,417.18 - Step 6: Final answer
x = 123,769.95
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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.