Finding the Fourth Proportional to 217,163.13, 299,697.42 and 121,700.58
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Solution
The fourth proportional to 217,163.13, 299,697.42 and 121,700.58 is: 167,953.69
Step by Step Solution
- Step 1: Write the proportion equation
217,163.13 : 299,697.42 = 121,700.58 : x - Step 2: Convert to fraction form
217,163.13/299,697.42 = 121,700.58/x - Step 3: Cross multiply
217,163.13x = 299,697.42 × 121,700.58 - Step 4: Simplify right side
217,163.13x = 36,473,349,838.50 - Step 5: Solve for x
x = 36,473,349,838.50/217,163.13 - Step 6: Final answer
x = 167,953.69
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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.