Finding the Fourth Proportional to 102,503.87, 153,755.79 and 31,426.70
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Solution
The fourth proportional to 102,503.87, 153,755.79 and 31,426.70 is: 47,140.05
Step by Step Solution
- Step 1: Write the proportion equation
102,503.87 : 153,755.79 = 31,426.70 : x - Step 2: Convert to fraction form
102,503.87/153,755.79 = 31,426.70/x - Step 3: Cross multiply
102,503.87x = 153,755.79 × 31,426.70 - Step 4: Simplify right side
102,503.87x = 4,832,037,085.59 - Step 5: Solve for x
x = 4,832,037,085.59/102,503.87 - Step 6: Final answer
x = 47,140.05
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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.