Finding the Fourth Proportional to 125,239.30, 187,415.49 and 77,876.70
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Solution
The fourth proportional to 125,239.30, 187,415.49 and 77,876.70 is: 116,539.30
Step by Step Solution
- Step 1: Write the proportion equation
125,239.30 : 187,415.49 = 77,876.70 : x - Step 2: Convert to fraction form
125,239.30/187,415.49 = 77,876.70/x - Step 3: Cross multiply
125,239.30x = 187,415.49 × 77,876.70 - Step 4: Simplify right side
125,239.30x = 14,595,299,890.08 - Step 5: Solve for x
x = 14,595,299,890.08/125,239.30 - Step 6: Final answer
x = 116,539.30
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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.