Finding the Fourth Proportional to 156,921.70, 235,036.95 and 136,185.70
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Solution
The fourth proportional to 156,921.70, 235,036.95 and 136,185.70 is: 203,978.62
Step by Step Solution
- Step 1: Write the proportion equation
156,921.70 : 235,036.95 = 136,185.70 : x - Step 2: Convert to fraction form
156,921.70/235,036.95 = 136,185.70/x - Step 3: Cross multiply
156,921.70x = 235,036.95 × 136,185.70 - Step 4: Simplify right side
156,921.70x = 32,008,671,561.62 - Step 5: Solve for x
x = 32,008,671,561.62/156,921.70 - Step 6: Final answer
x = 203,978.62
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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.