Finding the Fourth Proportional to 125,138.79, 187,646.90 and 61,885.62
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Solution
The fourth proportional to 125,138.79, 187,646.90 and 61,885.62 is: 92,798.12
Step by Step Solution
- Step 1: Write the proportion equation
125,138.79 : 187,646.90 = 61,885.62 : x - Step 2: Convert to fraction form
125,138.79/187,646.90 = 61,885.62/x - Step 3: Cross multiply
125,138.79x = 187,646.90 × 61,885.62 - Step 4: Simplify right side
125,138.79x = 11,612,644,438.15 - Step 5: Solve for x
x = 11,612,644,438.15/125,138.79 - Step 6: Final answer
x = 92,798.12
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.