Finding the Fourth Proportional to 103,068.57, 155,304.94 and 84,758.73
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Solution
The fourth proportional to 103,068.57, 155,304.94 and 84,758.73 is: 127,715.46
Step by Step Solution
- Step 1: Write the proportion equation
103,068.57 : 155,304.94 = 84,758.73 : x - Step 2: Convert to fraction form
103,068.57/155,304.94 = 84,758.73/x - Step 3: Cross multiply
103,068.57x = 155,304.94 × 84,758.73 - Step 4: Simplify right side
103,068.57x = 13,163,449,477.13 - Step 5: Solve for x
x = 13,163,449,477.13/103,068.57 - Step 6: Final answer
x = 127,715.46
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.