Finding the Fourth Proportional to 119,309.81, 178,955.37 and 69,358.05
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Solution
The fourth proportional to 119,309.81, 178,955.37 and 69,358.05 is: 104,031.65
Step by Step Solution
- Step 1: Write the proportion equation
119,309.81 : 178,955.37 = 69,358.05 : x - Step 2: Convert to fraction form
119,309.81/178,955.37 = 69,358.05/x - Step 3: Cross multiply
119,309.81x = 178,955.37 × 69,358.05 - Step 4: Simplify right side
119,309.81x = 12,411,995,500.23 - Step 5: Solve for x
x = 12,411,995,500.23/119,309.81 - Step 6: Final answer
x = 104,031.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.