Finding the Fourth Proportional to 130,576.18, 180,192.58 and 76,138.51
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Solution
The fourth proportional to 130,576.18, 180,192.58 and 76,138.51 is: 105,069.66
Step by Step Solution
- Step 1: Write the proportion equation
130,576.18 : 180,192.58 = 76,138.51 : x - Step 2: Convert to fraction form
130,576.18/180,192.58 = 76,138.51/x - Step 3: Cross multiply
130,576.18x = 180,192.58 × 76,138.51 - Step 4: Simplify right side
130,576.18x = 13,719,594,554.26 - Step 5: Solve for x
x = 13,719,594,554.26/130,576.18 - Step 6: Final answer
x = 105,069.66
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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.