Finding the Fourth Proportional to 153,701.62, 212,107.84 and 85,718.68
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Solution
The fourth proportional to 153,701.62, 212,107.84 and 85,718.68 is: 118,291.55
Step by Step Solution
- Step 1: Write the proportion equation
153,701.62 : 212,107.84 = 85,718.68 : x - Step 2: Convert to fraction form
153,701.62/212,107.84 = 85,718.68/x - Step 3: Cross multiply
153,701.62x = 212,107.84 × 85,718.68 - Step 4: Simplify right side
153,701.62x = 18,181,603,317.88 - Step 5: Solve for x
x = 18,181,603,317.88/153,701.62 - Step 6: Final answer
x = 118,291.55
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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.