Finding the Fourth Proportional to 121,645.08, 167,818.32 and 76,292.28
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Solution
The fourth proportional to 121,645.08, 167,818.32 and 76,292.28 is: 105,250.80
Step by Step Solution
- Step 1: Write the proportion equation
121,645.08 : 167,818.32 = 76,292.28 : x - Step 2: Convert to fraction form
121,645.08/167,818.32 = 76,292.28/x - Step 3: Cross multiply
121,645.08x = 167,818.32 × 76,292.28 - Step 4: Simplify right side
121,645.08x = 12,803,242,258.57 - Step 5: Solve for x
x = 12,803,242,258.57/121,645.08 - Step 6: Final answer
x = 105,250.80
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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.