Finding the Fourth Proportional to 100,855.06, 139,118.58 and 62,099.12
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Solution
The fourth proportional to 100,855.06, 139,118.58 and 62,099.12 is: 85,658.98
Step by Step Solution
- Step 1: Write the proportion equation
100,855.06 : 139,118.58 = 62,099.12 : x - Step 2: Convert to fraction form
100,855.06/139,118.58 = 62,099.12/x - Step 3: Cross multiply
100,855.06x = 139,118.58 × 62,099.12 - Step 4: Simplify right side
100,855.06x = 8,639,141,393.65 - Step 5: Solve for x
x = 8,639,141,393.65/100,855.06 - Step 6: Final answer
x = 85,658.98
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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.