Finding the Fourth Proportional to 156,318.18, 215,719.28 and 84,698.18
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Solution
The fourth proportional to 156,318.18, 215,719.28 and 84,698.18 is: 116,883.59
Step by Step Solution
- Step 1: Write the proportion equation
156,318.18 : 215,719.28 = 84,698.18 : x - Step 2: Convert to fraction form
156,318.18/215,719.28 = 84,698.18/x - Step 3: Cross multiply
156,318.18x = 215,719.28 × 84,698.18 - Step 4: Simplify right side
156,318.18x = 18,271,030,406.91 - Step 5: Solve for x
x = 18,271,030,406.91/156,318.18 - Step 6: Final answer
x = 116,883.59
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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.