Finding the Fourth Proportional to 125,679.76, 188,549.68 and 36,931.28
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Solution
The fourth proportional to 125,679.76, 188,549.68 and 36,931.28 is: 55,405.75
Step by Step Solution
- Step 1: Write the proportion equation
125,679.76 : 188,549.68 = 36,931.28 : x - Step 2: Convert to fraction form
125,679.76/188,549.68 = 36,931.28/x - Step 3: Cross multiply
125,679.76x = 188,549.68 × 36,931.28 - Step 4: Simplify right side
125,679.76x = 6,963,381,025.99 - Step 5: Solve for x
x = 6,963,381,025.99/125,679.76 - Step 6: Final answer
x = 55,405.75
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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.