Finding the Fourth Proportional to 121,659.67, 168,005.84 and 115,033.06
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Solution
The fourth proportional to 121,659.67, 168,005.84 and 115,033.06 is: 158,854.83
Step by Step Solution
- Step 1: Write the proportion equation
121,659.67 : 168,005.84 = 115,033.06 : x - Step 2: Convert to fraction form
121,659.67/168,005.84 = 115,033.06/x - Step 3: Cross multiply
121,659.67x = 168,005.84 × 115,033.06 - Step 4: Simplify right side
121,659.67x = 19,326,225,873.07 - Step 5: Solve for x
x = 19,326,225,873.07/121,659.67 - Step 6: Final answer
x = 158,854.83
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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.