Finding the Fourth Proportional to 157,296.04, 216,879.87 and 128,509.05
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Solution
The fourth proportional to 157,296.04, 216,879.87 and 128,509.05 is: 177,188.35
Step by Step Solution
- Step 1: Write the proportion equation
157,296.04 : 216,879.87 = 128,509.05 : x - Step 2: Convert to fraction form
157,296.04/216,879.87 = 128,509.05/x - Step 3: Cross multiply
157,296.04x = 216,879.87 × 128,509.05 - Step 4: Simplify right side
157,296.04x = 27,871,026,057.82 - Step 5: Solve for x
x = 27,871,026,057.82/157,296.04 - Step 6: Final answer
x = 177,188.35
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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.