Finding the Fourth Proportional to 128,183.14, 176,629.71 and 115,411.06
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Solution
The fourth proportional to 128,183.14, 176,629.71 and 115,411.06 is: 159,030.45
Step by Step Solution
- Step 1: Write the proportion equation
128,183.14 : 176,629.71 = 115,411.06 : x - Step 2: Convert to fraction form
128,183.14/176,629.71 = 115,411.06/x - Step 3: Cross multiply
128,183.14x = 176,629.71 × 115,411.06 - Step 4: Simplify right side
128,183.14x = 20,385,022,058.59 - Step 5: Solve for x
x = 20,385,022,058.59/128,183.14 - Step 6: Final answer
x = 159,030.45
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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.