Finding the Fourth Proportional to 173,712.15, 239,395.14 and 139,217.70
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Solution
The fourth proportional to 173,712.15, 239,395.14 and 139,217.70 is: 191,857.86
Step by Step Solution
- Step 1: Write the proportion equation
173,712.15 : 239,395.14 = 139,217.70 : x - Step 2: Convert to fraction form
173,712.15/239,395.14 = 139,217.70/x - Step 3: Cross multiply
173,712.15x = 239,395.14 × 139,217.70 - Step 4: Simplify right side
173,712.15x = 33,328,040,781.98 - Step 5: Solve for x
x = 33,328,040,781.98/173,712.15 - Step 6: Final answer
x = 191,857.86
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1.5x scale
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.