Finding the Fourth Proportional to 103,700.09, 143,120.04 and 58,387.07
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Solution
The fourth proportional to 103,700.09, 143,120.04 and 58,387.07 is: 80,581.99
Step by Step Solution
- Step 1: Write the proportion equation
103,700.09 : 143,120.04 = 58,387.07 : x - Step 2: Convert to fraction form
103,700.09/143,120.04 = 58,387.07/x - Step 3: Cross multiply
103,700.09x = 143,120.04 × 58,387.07 - Step 4: Simplify right side
103,700.09x = 8,356,359,793.88 - Step 5: Solve for x
x = 8,356,359,793.88/103,700.09 - Step 6: Final answer
x = 80,581.99
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1.5x scale
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.