Finding the Fourth Proportional to 156,036.68, 215,330.12 and 84,416.68
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Solution
The fourth proportional to 156,036.68, 215,330.12 and 84,416.68 is: 116,494.75
Step by Step Solution
- Step 1: Write the proportion equation
156,036.68 : 215,330.12 = 84,416.68 : x - Step 2: Convert to fraction form
156,036.68/215,330.12 = 84,416.68/x - Step 3: Cross multiply
156,036.68x = 215,330.12 × 84,416.68 - Step 4: Simplify right side
156,036.68x = 18,177,453,834.40 - Step 5: Solve for x
x = 18,177,453,834.40/156,036.68 - Step 6: Final answer
x = 116,494.75
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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.