Finding the Fourth Proportional to 135,898.40, 187,540.98 and 79,298.84
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Solution
The fourth proportional to 135,898.40, 187,540.98 and 79,298.84 is: 109,433.09
Step by Step Solution
- Step 1: Write the proportion equation
135,898.40 : 187,540.98 = 79,298.84 : x - Step 2: Convert to fraction form
135,898.40/187,540.98 = 79,298.84/x - Step 3: Cross multiply
135,898.40x = 187,540.98 × 79,298.84 - Step 4: Simplify right side
135,898.40x = 14,871,782,166.46 - Step 5: Solve for x
x = 14,871,782,166.46/135,898.40 - Step 6: Final answer
x = 109,433.09
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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.