Finding the Fourth Proportional to 135,690.90, 187,246.84 and 75,256.19
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Solution
The fourth proportional to 135,690.90, 187,246.84 and 75,256.19 is: 103,849.88
Step by Step Solution
- Step 1: Write the proportion equation
135,690.90 : 187,246.84 = 75,256.19 : x - Step 2: Convert to fraction form
135,690.90/187,246.84 = 75,256.19/x - Step 3: Cross multiply
135,690.90x = 187,246.84 × 75,256.19 - Step 4: Simplify right side
135,690.90x = 14,091,483,486.85 - Step 5: Solve for x
x = 14,091,483,486.85/135,690.90 - Step 6: Final answer
x = 103,849.88
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1.5x scale
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.