Finding the Fourth Proportional to 130,638.92, 195,626.00 and 86,130.63
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Solution
The fourth proportional to 130,638.92, 195,626.00 and 86,130.63 is: 128,976.81
Step by Step Solution
- Step 1: Write the proportion equation
130,638.92 : 195,626.00 = 86,130.63 : x - Step 2: Convert to fraction form
130,638.92/195,626.00 = 86,130.63/x - Step 3: Cross multiply
130,638.92x = 195,626.00 × 86,130.63 - Step 4: Simplify right side
130,638.92x = 16,849,390,193.73 - Step 5: Solve for x
x = 16,849,390,193.73/130,638.92 - Step 6: Final answer
x = 128,976.81
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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.