Finding the Fourth Proportional to 152,986.58, 211,120.80 and 85,014.62
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Solution
The fourth proportional to 152,986.58, 211,120.80 and 85,014.62 is: 117,319.80
Step by Step Solution
- Step 1: Write the proportion equation
152,986.58 : 211,120.80 = 85,014.62 : x - Step 2: Convert to fraction form
152,986.58/211,120.80 = 85,014.62/x - Step 3: Cross multiply
152,986.58x = 211,120.80 × 85,014.62 - Step 4: Simplify right side
152,986.58x = 17,948,354,586.10 - Step 5: Solve for x
x = 17,948,354,586.10/152,986.58 - Step 6: Final answer
x = 117,319.80
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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.