Finding the Fourth Proportional to 136,976.99, 189,035.71 and 76,547.75
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Solution
The fourth proportional to 136,976.99, 189,035.71 and 76,547.75 is: 105,640.06
Step by Step Solution
- Step 1: Write the proportion equation
136,976.99 : 189,035.71 = 76,547.75 : x - Step 2: Convert to fraction form
136,976.99/189,035.71 = 76,547.75/x - Step 3: Cross multiply
136,976.99x = 189,035.71 × 76,547.75 - Step 4: Simplify right side
136,976.99x = 14,470,257,133.60 - Step 5: Solve for x
x = 14,470,257,133.60/136,976.99 - Step 6: Final answer
x = 105,640.06
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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.