Finding the Fourth Proportional to 139,977.43, 193,160.52 and 79,539.68
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Solution
The fourth proportional to 139,977.43, 193,160.52 and 79,539.68 is: 109,760.03
Step by Step Solution
- Step 1: Write the proportion equation
139,977.43 : 193,160.52 = 79,539.68 : x - Step 2: Convert to fraction form
139,977.43/193,160.52 = 79,539.68/x - Step 3: Cross multiply
139,977.43x = 193,160.52 × 79,539.68 - Step 4: Simplify right side
139,977.43x = 15,363,926,247.71 - Step 5: Solve for x
x = 15,363,926,247.71/139,977.43 - Step 6: Final answer
x = 109,760.03
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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.