Finding the Fourth Proportional to 115,932.39, 159,990.24 and 64,944.99
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Solution
The fourth proportional to 115,932.39, 159,990.24 and 64,944.99 is: 89,626.07
Step by Step Solution
- Step 1: Write the proportion equation
115,932.39 : 159,990.24 = 64,944.99 : x - Step 2: Convert to fraction form
115,932.39/159,990.24 = 64,944.99/x - Step 3: Cross multiply
115,932.39x = 159,990.24 × 64,944.99 - Step 4: Simplify right side
115,932.39x = 10,390,564,536.90 - Step 5: Solve for x
x = 10,390,564,536.90/115,932.39 - Step 6: Final answer
x = 89,626.07
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1.5x scale
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.