Finding the Fourth Proportional to 133,129.71, 183,742.73 and 78,679.65
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Solution
The fourth proportional to 133,129.71, 183,742.73 and 78,679.65 is: 108,591.95
Step by Step Solution
- Step 1: Write the proportion equation
133,129.71 : 183,742.73 = 78,679.65 : x - Step 2: Convert to fraction form
133,129.71/183,742.73 = 78,679.65/x - Step 3: Cross multiply
133,129.71x = 183,742.73 × 78,679.65 - Step 4: Simplify right side
133,129.71x = 14,456,814,277.13 - Step 5: Solve for x
x = 14,456,814,277.13/133,129.71 - Step 6: Final answer
x = 108,591.95
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.