Finding the Fourth Proportional to 129,251.24, 178,392.30 and 83,865.52
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Solution
The fourth proportional to 129,251.24, 178,392.30 and 83,865.52 is: 115,751.02
Step by Step Solution
- Step 1: Write the proportion equation
129,251.24 : 178,392.30 = 83,865.52 : x - Step 2: Convert to fraction form
129,251.24/178,392.30 = 83,865.52/x - Step 3: Cross multiply
129,251.24x = 178,392.30 × 83,865.52 - Step 4: Simplify right side
129,251.24x = 14,960,962,111.53 - Step 5: Solve for x
x = 14,960,962,111.53/129,251.24 - Step 6: Final answer
x = 115,751.02
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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.