Finding the Fourth Proportional to 100,904.86, 139,248.69 and 58,487.99
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Solution
The fourth proportional to 100,904.86, 139,248.69 and 58,487.99 is: 80,713.42
Step by Step Solution
- Step 1: Write the proportion equation
100,904.86 : 139,248.69 = 58,487.99 : x - Step 2: Convert to fraction form
100,904.86/139,248.69 = 58,487.99/x - Step 3: Cross multiply
100,904.86x = 139,248.69 × 58,487.99 - Step 4: Simplify right side
100,904.86x = 8,144,375,988.23 - Step 5: Solve for x
x = 8,144,375,988.23/100,904.86 - Step 6: Final answer
x = 80,713.42
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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.