Finding the Fourth Proportional to 207,911.41, 286,989.28 and 121,898.12
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Solution
The fourth proportional to 207,911.41, 286,989.28 and 121,898.12 is: 168,261.34
Step by Step Solution
- Step 1: Write the proportion equation
207,911.41 : 286,989.28 = 121,898.12 : x - Step 2: Convert to fraction form
207,911.41/286,989.28 = 121,898.12/x - Step 3: Cross multiply
207,911.41x = 286,989.28 × 121,898.12 - Step 4: Simplify right side
207,911.41x = 34,983,451,952.46 - Step 5: Solve for x
x = 34,983,451,952.46/207,911.41 - Step 6: Final answer
x = 168,261.34
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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.