Finding the Fourth Proportional to 135,663.70, 187,000.14 and 106,936.78
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Solution
The fourth proportional to 135,663.70, 187,000.14 and 106,936.78 is: 147,402.68
Step by Step Solution
- Step 1: Write the proportion equation
135,663.70 : 187,000.14 = 106,936.78 : x - Step 2: Convert to fraction form
135,663.70/187,000.14 = 106,936.78/x - Step 3: Cross multiply
135,663.70x = 187,000.14 × 106,936.78 - Step 4: Simplify right side
135,663.70x = 19,997,192,831.15 - Step 5: Solve for x
x = 19,997,192,831.15/135,663.70 - Step 6: Final answer
x = 147,402.68
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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.