Finding the Fourth Proportional to 135,700.09, 187,143.55 and 84,717.54
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Solution
The fourth proportional to 135,700.09, 187,143.55 and 84,717.54 is: 116,833.68
Step by Step Solution
- Step 1: Write the proportion equation
135,700.09 : 187,143.55 = 84,717.54 : x - Step 2: Convert to fraction form
135,700.09/187,143.55 = 84,717.54/x - Step 3: Cross multiply
135,700.09x = 187,143.55 × 84,717.54 - Step 4: Simplify right side
135,700.09x = 15,854,341,182.87 - Step 5: Solve for x
x = 15,854,341,182.87/135,700.09 - Step 6: Final answer
x = 116,833.68
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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.