Finding the Fourth Proportional to 156,056.81, 215,356.86 and 84,435.26
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Solution
The fourth proportional to 156,056.81, 215,356.86 and 84,435.26 is: 116,519.82
Step by Step Solution
- Step 1: Write the proportion equation
156,056.81 : 215,356.86 = 84,435.26 : x - Step 2: Convert to fraction form
156,056.81/215,356.86 = 84,435.26/x - Step 3: Cross multiply
156,056.81x = 215,356.86 × 84,435.26 - Step 4: Simplify right side
156,056.81x = 18,183,711,390.10 - Step 5: Solve for x
x = 18,183,711,390.10/156,056.81 - Step 6: Final answer
x = 116,519.82
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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.