Finding the Fourth Proportional to 121,854.24, 167,785.02 and 106,661.88
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Solution
The fourth proportional to 121,854.24, 167,785.02 and 106,661.88 is: 146,866.17
Step by Step Solution
- Step 1: Write the proportion equation
121,854.24 : 167,785.02 = 106,661.88 : x - Step 2: Convert to fraction form
121,854.24/167,785.02 = 106,661.88/x - Step 3: Cross multiply
121,854.24x = 167,785.02 × 106,661.88 - Step 4: Simplify right side
121,854.24x = 17,896,265,669.04 - Step 5: Solve for x
x = 17,896,265,669.04/121,854.24 - Step 6: Final answer
x = 146,866.17
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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.