Finding the Fourth Proportional to 187,385.12, 258,575.84 and 105,708.88
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Solution
The fourth proportional to 187,385.12, 258,575.84 and 105,708.88 is: 145,869.44
Step by Step Solution
- Step 1: Write the proportion equation
187,385.12 : 258,575.84 = 105,708.88 : x - Step 2: Convert to fraction form
187,385.12/258,575.84 = 105,708.88/x - Step 3: Cross multiply
187,385.12x = 258,575.84 × 105,708.88 - Step 4: Simplify right side
187,385.12x = 27,333,762,441.46 - Step 5: Solve for x
x = 27,333,762,441.46/187,385.12 - Step 6: Final answer
x = 145,869.44
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1.5x scale
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.