Finding the Fourth Proportional to 155,725.40, 233,442.30 and 121,972.70
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Solution
The fourth proportional to 155,725.40, 233,442.30 and 121,972.70 is: 182,844.85
Step by Step Solution
- Step 1: Write the proportion equation
155,725.40 : 233,442.30 = 121,972.70 : x - Step 2: Convert to fraction form
155,725.40/233,442.30 = 121,972.70/x - Step 3: Cross multiply
155,725.40x = 233,442.30 × 121,972.70 - Step 4: Simplify right side
155,725.40x = 28,473,587,625.21 - Step 5: Solve for x
x = 28,473,587,625.21/155,725.40 - Step 6: Final answer
x = 182,844.85
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.