Finding the Fourth Proportional to 102,618.88, 141,574.08 and 69,107.20
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Solution
The fourth proportional to 102,618.88, 141,574.08 and 69,107.20 is: 95,341.02
Step by Step Solution
- Step 1: Write the proportion equation
102,618.88 : 141,574.08 = 69,107.20 : x - Step 2: Convert to fraction form
102,618.88/141,574.08 = 69,107.20/x - Step 3: Cross multiply
102,618.88x = 141,574.08 × 69,107.20 - Step 4: Simplify right side
102,618.88x = 9,783,788,261.38 - Step 5: Solve for x
x = 9,783,788,261.38/102,618.88 - Step 6: Final answer
x = 95,341.02
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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.