Finding the Fourth Proportional to 130,516.71, 180,113.04 and 73,928.09
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Solution
The fourth proportional to 130,516.71, 180,113.04 and 73,928.09 is: 102,020.75
Step by Step Solution
- Step 1: Write the proportion equation
130,516.71 : 180,113.04 = 73,928.09 : x - Step 2: Convert to fraction form
130,516.71/180,113.04 = 73,928.09/x - Step 3: Cross multiply
130,516.71x = 180,113.04 × 73,928.09 - Step 4: Simplify right side
130,516.71x = 13,315,412,130.73 - Step 5: Solve for x
x = 13,315,412,130.73/130,516.71 - Step 6: Final answer
x = 102,020.75
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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.