Finding the Fourth Proportional to 124,415.60, 186,623.40 and 74,649.20
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Solution
The fourth proportional to 124,415.60, 186,623.40 and 74,649.20 is: 111,973.80
Step by Step Solution
- Step 1: Write the proportion equation
124,415.60 : 186,623.40 = 74,649.20 : x - Step 2: Convert to fraction form
124,415.60/186,623.40 = 74,649.20/x - Step 3: Cross multiply
124,415.60x = 186,623.40 × 74,649.20 - Step 4: Simplify right side
124,415.60x = 13,931,287,511.28 - Step 5: Solve for x
x = 13,931,287,511.28/124,415.60 - Step 6: Final answer
x = 111,973.80
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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.