Finding the Fourth Proportional to 149,141.24, 205,819.80 and 85,491.08
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Solution
The fourth proportional to 149,141.24, 205,819.80 and 85,491.08 is: 117,980.49
Step by Step Solution
- Step 1: Write the proportion equation
149,141.24 : 205,819.80 = 85,491.08 : x - Step 2: Convert to fraction form
149,141.24/205,819.80 = 85,491.08/x - Step 3: Cross multiply
149,141.24x = 205,819.80 × 85,491.08 - Step 4: Simplify right side
149,141.24x = 17,595,756,987.38 - Step 5: Solve for x
x = 17,595,756,987.38/149,141.24 - Step 6: Final answer
x = 117,980.49
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1.5x scale
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.