Finding the Fourth Proportional to 117,285.95, 161,853.68 and 63,569.58
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Solution
The fourth proportional to 117,285.95, 161,853.68 and 63,569.58 is: 87,725.52
Step by Step Solution
- Step 1: Write the proportion equation
117,285.95 : 161,853.68 = 63,569.58 : x - Step 2: Convert to fraction form
117,285.95/161,853.68 = 63,569.58/x - Step 3: Cross multiply
117,285.95x = 161,853.68 × 63,569.58 - Step 4: Simplify right side
117,285.95x = 10,288,970,141.21 - Step 5: Solve for x
x = 10,288,970,141.21/117,285.95 - Step 6: Final answer
x = 87,725.52
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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.