Finding the Fourth Proportional to 156,861.36, 216,319.68 and 103,191.84
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Solution
The fourth proportional to 156,861.36, 216,319.68 and 103,191.84 is: 142,306.72
Step by Step Solution
- Step 1: Write the proportion equation
156,861.36 : 216,319.68 = 103,191.84 : x - Step 2: Convert to fraction form
156,861.36/216,319.68 = 103,191.84/x - Step 3: Cross multiply
156,861.36x = 216,319.68 × 103,191.84 - Step 4: Simplify right side
156,861.36x = 22,322,425,807.41 - Step 5: Solve for x
x = 22,322,425,807.41/156,861.36 - Step 6: Final answer
x = 142,306.72
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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.