Finding the Fourth Proportional to 207,885.21, 286,881.51 and 112,391.88
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Solution
The fourth proportional to 207,885.21, 286,881.51 and 112,391.88 is: 155,100.75
Step by Step Solution
- Step 1: Write the proportion equation
207,885.21 : 286,881.51 = 112,391.88 : x - Step 2: Convert to fraction form
207,885.21/286,881.51 = 112,391.88/x - Step 3: Cross multiply
207,885.21x = 286,881.51 × 112,391.88 - Step 4: Simplify right side
207,885.21x = 32,243,152,246.14 - Step 5: Solve for x
x = 32,243,152,246.14/207,885.21 - Step 6: Final answer
x = 155,100.75
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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.