Finding the Fourth Proportional to 133,290.36, 183,960.72 and 76,690.80
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Solution
The fourth proportional to 133,290.36, 183,960.72 and 76,690.80 is: 105,844.82
Step by Step Solution
- Step 1: Write the proportion equation
133,290.36 : 183,960.72 = 76,690.80 : x - Step 2: Convert to fraction form
133,290.36/183,960.72 = 76,690.80/x - Step 3: Cross multiply
133,290.36x = 183,960.72 × 76,690.80 - Step 4: Simplify right side
133,290.36x = 14,108,094,785.38 - Step 5: Solve for x
x = 14,108,094,785.38/133,290.36 - Step 6: Final answer
x = 105,844.82
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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.