Finding the Fourth Proportional to 102,615.30, 153,922.95 and 92,117.70
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Solution
The fourth proportional to 102,615.30, 153,922.95 and 92,117.70 is: 138,176.55
Step by Step Solution
- Step 1: Write the proportion equation
102,615.30 : 153,922.95 = 92,117.70 : x - Step 2: Convert to fraction form
102,615.30/153,922.95 = 92,117.70/x - Step 3: Cross multiply
102,615.30x = 153,922.95 × 92,117.70 - Step 4: Simplify right side
102,615.30x = 14,179,028,131.22 - Step 5: Solve for x
x = 14,179,028,131.22/102,615.30 - Step 6: Final answer
x = 138,176.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.