Finding the Fourth Proportional to 130,415.40, 195,623.10 and 129,637.80
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Solution
The fourth proportional to 130,415.40, 195,623.10 and 129,637.80 is: 194,456.70
Step by Step Solution
- Step 1: Write the proportion equation
130,415.40 : 195,623.10 = 129,637.80 : x - Step 2: Convert to fraction form
130,415.40/195,623.10 = 129,637.80/x - Step 3: Cross multiply
130,415.40x = 195,623.10 × 129,637.80 - Step 4: Simplify right side
130,415.40x = 25,360,148,313.18 - Step 5: Solve for x
x = 25,360,148,313.18/130,415.40 - Step 6: Final answer
x = 194,456.70
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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.