Finding the Fourth Proportional to 139,612.78, 209,416.44 and 39,773.62
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Solution
The fourth proportional to 139,612.78, 209,416.44 and 39,773.62 is: 59,659.65
Step by Step Solution
- Step 1: Write the proportion equation
139,612.78 : 209,416.44 = 39,773.62 : x - Step 2: Convert to fraction form
139,612.78/209,416.44 = 39,773.62/x - Step 3: Cross multiply
139,612.78x = 209,416.44 × 39,773.62 - Step 4: Simplify right side
139,612.78x = 8,329,249,906.31 - Step 5: Solve for x
x = 8,329,249,906.31/139,612.78 - Step 6: Final answer
x = 59,659.65
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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.