Finding the Fourth Proportional to 130,515.20, 180,110.97 and 73,926.58
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Solution
The fourth proportional to 130,515.20, 180,110.97 and 73,926.58 is: 102,018.67
Step by Step Solution
- Step 1: Write the proportion equation
130,515.20 : 180,110.97 = 73,926.58 : x - Step 2: Convert to fraction form
130,515.20/180,110.97 = 73,926.58/x - Step 3: Cross multiply
130,515.20x = 180,110.97 × 73,926.58 - Step 4: Simplify right side
130,515.20x = 13,314,987,582.31 - Step 5: Solve for x
x = 13,314,987,582.31/130,515.20 - Step 6: Final answer
x = 102,018.67
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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.