Finding the Fourth Proportional to 130,576.60, 195,929.70 and 74,459.80
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Solution
The fourth proportional to 130,576.60, 195,929.70 and 74,459.80 is: 111,726.65
Step by Step Solution
- Step 1: Write the proportion equation
130,576.60 : 195,929.70 = 74,459.80 : x - Step 2: Convert to fraction form
130,576.60/195,929.70 = 74,459.80/x - Step 3: Cross multiply
130,576.60x = 195,929.70 × 74,459.80 - Step 4: Simplify right side
130,576.60x = 14,588,886,276.06 - Step 5: Solve for x
x = 14,588,886,276.06/130,576.60 - Step 6: Final answer
x = 111,726.65
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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.