Finding the Fourth Proportional to 130,940.28, 180,698.82 and 74,352.84
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Solution
The fourth proportional to 130,940.28, 180,698.82 and 74,352.84 is: 102,607.62
Step by Step Solution
- Step 1: Write the proportion equation
130,940.28 : 180,698.82 = 74,352.84 : x - Step 2: Convert to fraction form
130,940.28/180,698.82 = 74,352.84/x - Step 3: Cross multiply
130,940.28x = 180,698.82 × 74,352.84 - Step 4: Simplify right side
130,940.28x = 13,435,470,451.65 - Step 5: Solve for x
x = 13,435,470,451.65/130,940.28 - Step 6: Final answer
x = 102,607.62
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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.