Finding the Fourth Proportional to 117,130.14, 161,639.52 and 63,415.62
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Solution
The fourth proportional to 117,130.14, 161,639.52 and 63,415.62 is: 87,513.52
Step by Step Solution
- Step 1: Write the proportion equation
117,130.14 : 161,639.52 = 63,415.62 : x - Step 2: Convert to fraction form
117,130.14/161,639.52 = 63,415.62/x - Step 3: Cross multiply
117,130.14x = 161,639.52 × 63,415.62 - Step 4: Simplify right side
117,130.14x = 10,250,470,377.30 - Step 5: Solve for x
x = 10,250,470,377.30/117,130.14 - Step 6: Final answer
x = 87,513.52
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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.