Finding the Fourth Proportional to 129,184.24, 178,281.60 and 86,088.88
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Solution
The fourth proportional to 129,184.24, 178,281.60 and 86,088.88 is: 118,807.55
Step by Step Solution
- Step 1: Write the proportion equation
129,184.24 : 178,281.60 = 86,088.88 : x - Step 2: Convert to fraction form
129,184.24/178,281.60 = 86,088.88/x - Step 3: Cross multiply
129,184.24x = 178,281.60 × 86,088.88 - Step 4: Simplify right side
129,184.24x = 15,348,063,268.61 - Step 5: Solve for x
x = 15,348,063,268.61/129,184.24 - Step 6: Final answer
x = 118,807.55
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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.