Finding the Fourth Proportional to 121,699.19, 168,804.08 and 118,462.43
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Solution
The fourth proportional to 121,699.19, 168,804.08 and 118,462.43 is: 164,314.49
Step by Step Solution
- Step 1: Write the proportion equation
121,699.19 : 168,804.08 = 118,462.43 : x - Step 2: Convert to fraction form
121,699.19/168,804.08 = 118,462.43/x - Step 3: Cross multiply
121,699.19x = 168,804.08 × 118,462.43 - Step 4: Simplify right side
121,699.19x = 19,996,940,074.38 - Step 5: Solve for x
x = 19,996,940,074.38/121,699.19 - Step 6: Final answer
x = 164,314.49
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.