Finding the Fourth Proportional to 125,913.40, 188,432.70 and 115,415.80
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Solution
The fourth proportional to 125,913.40, 188,432.70 and 115,415.80 is: 172,722.77
Step by Step Solution
- Step 1: Write the proportion equation
125,913.40 : 188,432.70 = 115,415.80 : x - Step 2: Convert to fraction form
125,913.40/188,432.70 = 115,415.80/x - Step 3: Cross multiply
125,913.40x = 188,432.70 × 115,415.80 - Step 4: Simplify right side
125,913.40x = 21,748,110,816.66 - Step 5: Solve for x
x = 21,748,110,816.66/125,913.40 - Step 6: Final answer
x = 172,722.77
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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.