Finding the Fourth Proportional to 121,745.57, 168,005.64 and 68,031.02
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Solution
The fourth proportional to 121,745.57, 168,005.64 and 68,031.02 is: 93,880.99
Step by Step Solution
- Step 1: Write the proportion equation
121,745.57 : 168,005.64 = 68,031.02 : x - Step 2: Convert to fraction form
121,745.57/168,005.64 = 68,031.02/x - Step 3: Cross multiply
121,745.57x = 168,005.64 × 68,031.02 - Step 4: Simplify right side
121,745.57x = 11,429,594,214.92 - Step 5: Solve for x
x = 11,429,594,214.92/121,745.57 - Step 6: Final answer
x = 93,880.99
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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.