Finding the Fourth Proportional to 156,863.20, 235,294.80 and 83,135.20
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Solution
The fourth proportional to 156,863.20, 235,294.80 and 83,135.20 is: 124,702.80
Step by Step Solution
- Step 1: Write the proportion equation
156,863.20 : 235,294.80 = 83,135.20 : x - Step 2: Convert to fraction form
156,863.20/235,294.80 = 83,135.20/x - Step 3: Cross multiply
156,863.20x = 235,294.80 × 83,135.20 - Step 4: Simplify right side
156,863.20x = 19,561,280,256.96 - Step 5: Solve for x
x = 19,561,280,256.96/156,863.20 - Step 6: Final answer
x = 124,702.80
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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.