Finding the Fourth Proportional to 155,315.49, 232,631.74 and 128,355.93
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Solution
The fourth proportional to 155,315.49, 232,631.74 and 128,355.93 is: 192,251.68
Step by Step Solution
- Step 1: Write the proportion equation
155,315.49 : 232,631.74 = 128,355.93 : x - Step 2: Convert to fraction form
155,315.49/232,631.74 = 128,355.93/x - Step 3: Cross multiply
155,315.49x = 232,631.74 × 128,355.93 - Step 4: Simplify right side
155,315.49x = 29,859,663,335.22 - Step 5: Solve for x
x = 29,859,663,335.22/155,315.49 - Step 6: Final answer
x = 192,251.68
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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.