Finding the Fourth Proportional to 103,349.12, 142,665.12 and 69,860.48
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Solution
The fourth proportional to 103,349.12, 142,665.12 and 69,860.48 is: 96,436.75
Step by Step Solution
- Step 1: Write the proportion equation
103,349.12 : 142,665.12 = 69,860.48 : x - Step 2: Convert to fraction form
103,349.12/142,665.12 = 69,860.48/x - Step 3: Cross multiply
103,349.12x = 142,665.12 × 69,860.48 - Step 4: Simplify right side
103,349.12x = 9,966,653,762.46 - Step 5: Solve for x
x = 9,966,653,762.46/103,349.12 - Step 6: Final answer
x = 96,436.75
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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.