Finding the Fourth Proportional to 121,955.07, 168,277.91 and 76,600.74
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Solution
The fourth proportional to 121,955.07, 168,277.91 and 76,600.74 is: 105,696.40
Step by Step Solution
- Step 1: Write the proportion equation
121,955.07 : 168,277.91 = 76,600.74 : x - Step 2: Convert to fraction form
121,955.07/168,277.91 = 76,600.74/x - Step 3: Cross multiply
121,955.07x = 168,277.91 × 76,600.74 - Step 4: Simplify right side
121,955.07x = 12,890,211,733.13 - Step 5: Solve for x
x = 12,890,211,733.13/121,955.07 - Step 6: Final answer
x = 105,696.40
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1.5x scale
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.