Finding the Fourth Proportional to 139,696.74, 192,775.79 and 79,266.13
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Solution
The fourth proportional to 139,696.74, 192,775.79 and 79,266.13 is: 109,384.02
Step by Step Solution
- Step 1: Write the proportion equation
139,696.74 : 192,775.79 = 79,266.13 : x - Step 2: Convert to fraction form
139,696.74/192,775.79 = 79,266.13/x - Step 3: Cross multiply
139,696.74x = 192,775.79 × 79,266.13 - Step 4: Simplify right side
139,696.74x = 15,280,590,547.22 - Step 5: Solve for x
x = 15,280,590,547.22/139,696.74 - Step 6: Final answer
x = 109,384.02
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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.