Finding the Fourth Proportional to 156,135.35, 215,570.84 and 105,223.79
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Solution
The fourth proportional to 156,135.35, 215,570.84 and 105,223.79 is: 145,278.95
Step by Step Solution
- Step 1: Write the proportion equation
156,135.35 : 215,570.84 = 105,223.79 : x - Step 2: Convert to fraction form
156,135.35/215,570.84 = 105,223.79/x - Step 3: Cross multiply
156,135.35x = 215,570.84 × 105,223.79 - Step 4: Simplify right side
156,135.35x = 22,683,179,194.31 - Step 5: Solve for x
x = 22,683,179,194.31/156,135.35 - Step 6: Final answer
x = 145,278.95
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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.