Finding the Fourth Proportional to 119,129.09, 164,400.17 and 65,416.37
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Solution
The fourth proportional to 119,129.09, 164,400.17 and 65,416.37 is: 90,275.70
Step by Step Solution
- Step 1: Write the proportion equation
119,129.09 : 164,400.17 = 65,416.37 : x - Step 2: Convert to fraction form
119,129.09/164,400.17 = 65,416.37/x - Step 3: Cross multiply
119,129.09x = 164,400.17 × 65,416.37 - Step 4: Simplify right side
119,129.09x = 10,754,461,199.70 - Step 5: Solve for x
x = 10,754,461,199.70/119,129.09 - Step 6: Final answer
x = 90,275.70
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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.