Finding the Fourth Proportional to 155,391.68, 214,438.38 and 87,403.52
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Solution
The fourth proportional to 155,391.68, 214,438.38 and 87,403.52 is: 120,615.65
Step by Step Solution
- Step 1: Write the proportion equation
155,391.68 : 214,438.38 = 87,403.52 : x - Step 2: Convert to fraction form
155,391.68/214,438.38 = 87,403.52/x - Step 3: Cross multiply
155,391.68x = 214,438.38 × 87,403.52 - Step 4: Simplify right side
155,391.68x = 18,742,669,235.10 - Step 5: Solve for x
x = 18,742,669,235.10/155,391.68 - Step 6: Final answer
x = 120,615.65
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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.