Finding the Fourth Proportional to 130,142.60, 195,115.74 and 71,028.68
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Solution
The fourth proportional to 130,142.60, 195,115.74 and 71,028.68 is: 106,489.45
Step by Step Solution
- Step 1: Write the proportion equation
130,142.60 : 195,115.74 = 71,028.68 : x - Step 2: Convert to fraction form
130,142.60/195,115.74 = 71,028.68/x - Step 3: Cross multiply
130,142.60x = 195,115.74 × 71,028.68 - Step 4: Simplify right side
130,142.60x = 13,858,813,459.42 - Step 5: Solve for x
x = 13,858,813,459.42/130,142.60 - Step 6: Final answer
x = 106,489.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.