Finding the Fourth Proportional to 138,737.18, 191,457.84 and 75,074.99
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Solution
The fourth proportional to 138,737.18, 191,457.84 and 75,074.99 is: 103,603.77
Step by Step Solution
- Step 1: Write the proportion equation
138,737.18 : 191,457.84 = 75,074.99 : x - Step 2: Convert to fraction form
138,737.18/191,457.84 = 75,074.99/x - Step 3: Cross multiply
138,737.18x = 191,457.84 × 75,074.99 - Step 4: Simplify right side
138,737.18x = 14,373,695,423.42 - Step 5: Solve for x
x = 14,373,695,423.42/138,737.18 - Step 6: Final answer
x = 103,603.77
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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.