Finding the Fourth Proportional to 139,315.04, 208,919.08 and 68,193.80
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Solution
The fourth proportional to 139,315.04, 208,919.08 and 68,193.80 is: 102,264.52
Step by Step Solution
- Step 1: Write the proportion equation
139,315.04 : 208,919.08 = 68,193.80 : x - Step 2: Convert to fraction form
139,315.04/208,919.08 = 68,193.80/x - Step 3: Cross multiply
139,315.04x = 208,919.08 × 68,193.80 - Step 4: Simplify right side
139,315.04x = 14,246,985,957.70 - Step 5: Solve for x
x = 14,246,985,957.70/139,315.04 - Step 6: Final answer
x = 102,264.52
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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.