Finding the Fourth Proportional to 130,929.21, 180,751.35 and 88,133.70
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Solution
The fourth proportional to 130,929.21, 180,751.35 and 88,133.70 is: 121,670.98
Step by Step Solution
- Step 1: Write the proportion equation
130,929.21 : 180,751.35 = 88,133.70 : x - Step 2: Convert to fraction form
130,929.21/180,751.35 = 88,133.70/x - Step 3: Cross multiply
130,929.21x = 180,751.35 × 88,133.70 - Step 4: Simplify right side
130,929.21x = 15,930,284,583.28 - Step 5: Solve for x
x = 15,930,284,583.28/130,929.21 - Step 6: Final answer
x = 121,670.98
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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.