Finding the Fourth Proportional to 130,616.88, 180,270.99 and 79,659.18
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Solution
The fourth proportional to 130,616.88, 180,270.99 and 79,659.18 is: 109,941.68
Step by Step Solution
- Step 1: Write the proportion equation
130,616.88 : 180,270.99 = 79,659.18 : x - Step 2: Convert to fraction form
130,616.88/180,270.99 = 79,659.18/x - Step 3: Cross multiply
130,616.88x = 180,270.99 × 79,659.18 - Step 4: Simplify right side
130,616.88x = 14,360,239,241.19 - Step 5: Solve for x
x = 14,360,239,241.19/130,616.88 - Step 6: Final answer
x = 109,941.68
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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.