Finding the Fourth Proportional to 155,395.87, 214,465.28 and 87,415.71
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Solution
The fourth proportional to 155,395.87, 214,465.28 and 87,415.71 is: 120,644.35
Step by Step Solution
- Step 1: Write the proportion equation
155,395.87 : 214,465.28 = 87,415.71 : x - Step 2: Convert to fraction form
155,395.87/214,465.28 = 87,415.71/x - Step 3: Cross multiply
155,395.87x = 214,465.28 × 87,415.71 - Step 4: Simplify right side
155,395.87x = 18,747,633,212.14 - Step 5: Solve for x
x = 18,747,633,212.14/155,395.87 - Step 6: Final answer
x = 120,644.35
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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.