Finding the Fourth Proportional to 155,110.68, 214,051.97 and 87,128.70
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Solution
The fourth proportional to 155,110.68, 214,051.97 and 87,128.70 is: 120,237.17
Step by Step Solution
- Step 1: Write the proportion equation
155,110.68 : 214,051.97 = 87,128.70 : x - Step 2: Convert to fraction form
155,110.68/214,051.97 = 87,128.70/x - Step 3: Cross multiply
155,110.68x = 214,051.97 × 87,128.70 - Step 4: Simplify right side
155,110.68x = 18,650,069,442.90 - Step 5: Solve for x
x = 18,650,069,442.90/155,110.68 - Step 6: Final answer
x = 120,237.17
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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.