Finding the Fourth Proportional to 207,913.38, 286,920.63 and 112,420.14
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Solution
The fourth proportional to 207,913.38, 286,920.63 and 112,420.14 is: 155,139.88
Step by Step Solution
- Step 1: Write the proportion equation
207,913.38 : 286,920.63 = 112,420.14 : x - Step 2: Convert to fraction form
207,913.38/286,920.63 = 112,420.14/x - Step 3: Cross multiply
207,913.38x = 286,920.63 × 112,420.14 - Step 4: Simplify right side
207,913.38x = 32,255,657,393.49 - Step 5: Solve for x
x = 32,255,657,393.49/207,913.38 - Step 6: Final answer
x = 155,139.88
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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.