Finding the Fourth Proportional to 155,430.81, 214,485.71 and 87,450.66
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Solution
The fourth proportional to 155,430.81, 214,485.71 and 87,450.66 is: 120,676.95
Step by Step Solution
- Step 1: Write the proportion equation
155,430.81 : 214,485.71 = 87,450.66 : x - Step 2: Convert to fraction form
155,430.81/214,485.71 = 87,450.66/x - Step 3: Cross multiply
155,430.81x = 214,485.71 × 87,450.66 - Step 4: Simplify right side
155,430.81x = 18,756,916,462.82 - Step 5: Solve for x
x = 18,756,916,462.82/155,430.81 - Step 6: Final answer
x = 120,676.95
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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.