Finding the Fourth Proportional to 133,130.71, 183,744.11 and 78,680.65
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Solution
The fourth proportional to 133,130.71, 183,744.11 and 78,680.65 is: 108,593.32
Step by Step Solution
- Step 1: Write the proportion equation
133,130.71 : 183,744.11 = 78,680.65 : x - Step 2: Convert to fraction form
133,130.71/183,744.11 = 78,680.65/x - Step 3: Cross multiply
133,130.71x = 183,744.11 × 78,680.65 - Step 4: Simplify right side
133,130.71x = 14,457,106,008.47 - Step 5: Solve for x
x = 14,457,106,008.47/133,130.71 - Step 6: Final answer
x = 108,593.32
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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.