Finding the Fourth Proportional to 135,921.75, 187,572.02 and 76,305.75
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Solution
The fourth proportional to 135,921.75, 187,572.02 and 76,305.75 is: 105,301.94
Step by Step Solution
- Step 1: Write the proportion equation
135,921.75 : 187,572.02 = 76,305.75 : x - Step 2: Convert to fraction form
135,921.75/187,572.02 = 76,305.75/x - Step 3: Cross multiply
135,921.75x = 187,572.02 × 76,305.75 - Step 4: Simplify right side
135,921.75x = 14,312,823,665.12 - Step 5: Solve for x
x = 14,312,823,665.12/135,921.75 - Step 6: Final answer
x = 105,301.94
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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.