Finding the Fourth Proportional to 138,219.18, 190,730.07 and 77,794.62
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Solution
The fourth proportional to 138,219.18, 190,730.07 and 77,794.62 is: 107,349.60
Step by Step Solution
- Step 1: Write the proportion equation
138,219.18 : 190,730.07 = 77,794.62 : x - Step 2: Convert to fraction form
138,219.18/190,730.07 = 77,794.62/x - Step 3: Cross multiply
138,219.18x = 190,730.07 × 77,794.62 - Step 4: Simplify right side
138,219.18x = 14,837,773,318.22 - Step 5: Solve for x
x = 14,837,773,318.22/138,219.18 - Step 6: Final answer
x = 107,349.60
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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.