Finding the Fourth Proportional to 185,665.24, 278,018.21 and 128,139.99
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Solution
The fourth proportional to 185,665.24, 278,018.21 and 128,139.99 is: 191,878.95
Step by Step Solution
- Step 1: Write the proportion equation
185,665.24 : 278,018.21 = 128,139.99 : x - Step 2: Convert to fraction form
185,665.24/278,018.21 = 128,139.99/x - Step 3: Cross multiply
185,665.24x = 278,018.21 × 128,139.99 - Step 4: Simplify right side
185,665.24x = 35,625,250,047.13 - Step 5: Solve for x
x = 35,625,250,047.13/185,665.24 - Step 6: Final answer
x = 191,878.95
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1.5x scale
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.