Finding the Fourth Proportional to 151,117.68, 208,549.40 and 87,443.12
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Solution
The fourth proportional to 151,117.68, 208,549.40 and 87,443.12 is: 120,675.56
Step by Step Solution
- Step 1: Write the proportion equation
151,117.68 : 208,549.40 = 87,443.12 : x - Step 2: Convert to fraction form
151,117.68/208,549.40 = 87,443.12/x - Step 3: Cross multiply
151,117.68x = 208,549.40 × 87,443.12 - Step 4: Simplify right side
151,117.68x = 18,236,210,210.13 - Step 5: Solve for x
x = 18,236,210,210.13/151,117.68 - Step 6: Final answer
x = 120,675.56
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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.