Finding the Fourth Proportional to 120,587.20, 180,880.80 and 97,259.20
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Solution
The fourth proportional to 120,587.20, 180,880.80 and 97,259.20 is: 145,888.80
Step by Step Solution
- Step 1: Write the proportion equation
120,587.20 : 180,880.80 = 97,259.20 : x - Step 2: Convert to fraction form
120,587.20/180,880.80 = 97,259.20/x - Step 3: Cross multiply
120,587.20x = 180,880.80 × 97,259.20 - Step 4: Simplify right side
120,587.20x = 17,592,321,903.36 - Step 5: Solve for x
x = 17,592,321,903.36/120,587.20 - Step 6: Final answer
x = 145,888.80
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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.