Finding the Fourth Proportional to 156,292.00, 215,679.98 and 87,381.18
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Solution
The fourth proportional to 156,292.00, 215,679.98 and 87,381.18 is: 120,584.37
Step by Step Solution
- Step 1: Write the proportion equation
156,292.00 : 215,679.98 = 87,381.18 : x - Step 2: Convert to fraction form
156,292.00/215,679.98 = 87,381.18/x - Step 3: Cross multiply
156,292.00x = 215,679.98 × 87,381.18 - Step 4: Simplify right side
156,292.00x = 18,846,371,373.23 - Step 5: Solve for x
x = 18,846,371,373.23/156,292.00 - Step 6: Final answer
x = 120,584.37
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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.