Finding the Fourth Proportional to 98,139.66, 147,209.52 and 31,584.99
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Solution
The fourth proportional to 98,139.66, 147,209.52 and 31,584.99 is: 47,377.49
Step by Step Solution
- Step 1: Write the proportion equation
98,139.66 : 147,209.52 = 31,584.99 : x - Step 2: Convert to fraction form
98,139.66/147,209.52 = 31,584.99/x - Step 3: Cross multiply
98,139.66x = 147,209.52 × 31,584.99 - Step 4: Simplify right side
98,139.66x = 4,649,611,217.10 - Step 5: Solve for x
x = 4,649,611,217.10/98,139.66 - Step 6: Final answer
x = 47,377.49
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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.