Finding the Fourth Proportional to 130,987.97, 180,763.40 and 71,371.97
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Solution
The fourth proportional to 130,987.97, 180,763.40 and 71,371.97 is: 98,493.32
Step by Step Solution
- Step 1: Write the proportion equation
130,987.97 : 180,763.40 = 71,371.97 : x - Step 2: Convert to fraction form
130,987.97/180,763.40 = 71,371.97/x - Step 3: Cross multiply
130,987.97x = 180,763.40 × 71,371.97 - Step 4: Simplify right side
130,987.97x = 12,901,439,512.91 - Step 5: Solve for x
x = 12,901,439,512.91/130,987.97 - Step 6: Final answer
x = 98,493.32
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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.