Finding the Fourth Proportional to 110,295.20, 165,442.80 and 57,720.80
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Solution
The fourth proportional to 110,295.20, 165,442.80 and 57,720.80 is: 86,581.20
Step by Step Solution
- Step 1: Write the proportion equation
110,295.20 : 165,442.80 = 57,720.80 : x - Step 2: Convert to fraction form
110,295.20/165,442.80 = 57,720.80/x - Step 3: Cross multiply
110,295.20x = 165,442.80 × 57,720.80 - Step 4: Simplify right side
110,295.20x = 9,549,490,770.24 - Step 5: Solve for x
x = 9,549,490,770.24/110,295.20 - Step 6: Final answer
x = 86,581.20
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1.5x scale
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.