Finding the Fourth Proportional to 142,164.99, 196,231.14 and 87,733.80
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Solution
The fourth proportional to 142,164.99, 196,231.14 and 87,733.80 is: 121,099.46
Step by Step Solution
- Step 1: Write the proportion equation
142,164.99 : 196,231.14 = 87,733.80 : x - Step 2: Convert to fraction form
142,164.99/196,231.14 = 87,733.80/x - Step 3: Cross multiply
142,164.99x = 196,231.14 × 87,733.80 - Step 4: Simplify right side
142,164.99x = 17,216,103,590.53 - Step 5: Solve for x
x = 17,216,103,590.53/142,164.99 - Step 6: Final answer
x = 121,099.46
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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.