Finding the Fourth Proportional to 207,931.28, 286,945.35 and 121,873.10
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Solution
The fourth proportional to 207,931.28, 286,945.35 and 121,873.10 is: 168,184.99
Step by Step Solution
- Step 1: Write the proportion equation
207,931.28 : 286,945.35 = 121,873.10 : x - Step 2: Convert to fraction form
207,931.28/286,945.35 = 121,873.10/x - Step 3: Cross multiply
207,931.28x = 286,945.35 × 121,873.10 - Step 4: Simplify right side
207,931.28x = 34,970,919,335.09 - Step 5: Solve for x
x = 34,970,919,335.09/207,931.28 - Step 6: Final answer
x = 168,184.99
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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.