Finding the Fourth Proportional to 86,107.68, 118,787.21 and 74,150.26
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Solution
The fourth proportional to 86,107.68, 118,787.21 and 74,150.26 is: 102,291.72
Step by Step Solution
- Step 1: Write the proportion equation
86,107.68 : 118,787.21 = 74,150.26 : x - Step 2: Convert to fraction form
86,107.68/118,787.21 = 74,150.26/x - Step 3: Cross multiply
86,107.68x = 118,787.21 × 74,150.26 - Step 4: Simplify right side
86,107.68x = 8,808,102,506.17 - Step 5: Solve for x
x = 8,808,102,506.17/86,107.68 - Step 6: Final answer
x = 102,291.72
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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.