Finding the Fourth Proportional to 130,510.71, 180,105.12 and 73,922.09
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Solution
The fourth proportional to 130,510.71, 180,105.12 and 73,922.09 is: 102,012.67
Step by Step Solution
- Step 1: Write the proportion equation
130,510.71 : 180,105.12 = 73,922.09 : x - Step 2: Convert to fraction form
130,510.71/180,105.12 = 73,922.09/x - Step 3: Cross multiply
130,510.71x = 180,105.12 × 73,922.09 - Step 4: Simplify right side
130,510.71x = 13,313,745,989.58 - Step 5: Solve for x
x = 13,313,745,989.58/130,510.71 - Step 6: Final answer
x = 102,012.67
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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.