Finding the Fourth Proportional to 121,745.19, 168,007.98 and 68,030.26
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Solution
The fourth proportional to 121,745.19, 168,007.98 and 68,030.26 is: 93,881.55
Step by Step Solution
- Step 1: Write the proportion equation
121,745.19 : 168,007.98 = 68,030.26 : x - Step 2: Convert to fraction form
121,745.19/168,007.98 = 68,030.26/x - Step 3: Cross multiply
121,745.19x = 168,007.98 × 68,030.26 - Step 4: Simplify right side
121,745.19x = 11,429,626,561.47 - Step 5: Solve for x
x = 11,429,626,561.47/121,745.19 - Step 6: Final answer
x = 93,881.55
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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.