Finding the Fourth Proportional to 103,345.92, 142,687.92 and 69,405.12
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Solution
The fourth proportional to 103,345.92, 142,687.92 and 69,405.12 is: 95,826.45
Step by Step Solution
- Step 1: Write the proportion equation
103,345.92 : 142,687.92 = 69,405.12 : x - Step 2: Convert to fraction form
103,345.92/142,687.92 = 69,405.12/x - Step 3: Cross multiply
103,345.92x = 142,687.92 × 69,405.12 - Step 4: Simplify right side
103,345.92x = 9,903,272,210.15 - Step 5: Solve for x
x = 9,903,272,210.15/103,345.92 - Step 6: Final answer
x = 95,826.45
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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.