Finding the Fourth Proportional to 141,384.61, 195,105.81 and 77,721.99
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Solution
The fourth proportional to 141,384.61, 195,105.81 and 77,721.99 is: 107,253.62
Step by Step Solution
- Step 1: Write the proportion equation
141,384.61 : 195,105.81 = 77,721.99 : x - Step 2: Convert to fraction form
141,384.61/195,105.81 = 77,721.99/x - Step 3: Cross multiply
141,384.61x = 195,105.81 × 77,721.99 - Step 4: Simplify right side
141,384.61x = 15,164,011,813.76 - Step 5: Solve for x
x = 15,164,011,813.76/141,384.61 - Step 6: Final answer
x = 107,253.62
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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.