Finding the Fourth Proportional to 139,922.13, 193,097.06 and 79,491.68
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Solution
The fourth proportional to 139,922.13, 193,097.06 and 79,491.68 is: 109,701.08
Step by Step Solution
- Step 1: Write the proportion equation
139,922.13 : 193,097.06 = 79,491.68 : x - Step 2: Convert to fraction form
139,922.13/193,097.06 = 79,491.68/x - Step 3: Cross multiply
139,922.13x = 193,097.06 × 79,491.68 - Step 4: Simplify right side
139,922.13x = 15,349,609,808.87 - Step 5: Solve for x
x = 15,349,609,808.87/139,922.13 - Step 6: Final answer
x = 109,701.08
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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.