Finding the Fourth Proportional to 130,828.80, 195,854.40 and 115,276.80
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Solution
The fourth proportional to 130,828.80, 195,854.40 and 115,276.80 is: 172,572.62
Step by Step Solution
- Step 1: Write the proportion equation
130,828.80 : 195,854.40 = 115,276.80 : x - Step 2: Convert to fraction form
130,828.80/195,854.40 = 115,276.80/x - Step 3: Cross multiply
130,828.80x = 195,854.40 × 115,276.80 - Step 4: Simplify right side
130,828.80x = 22,577,468,497.92 - Step 5: Solve for x
x = 22,577,468,497.92/130,828.80 - Step 6: Final answer
x = 172,572.62
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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.