Finding the Fourth Proportional to 105,107.96, 144,984.08 and 74,902.95
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Solution
The fourth proportional to 105,107.96, 144,984.08 and 74,902.95 is: 103,319.82
Step by Step Solution
- Step 1: Write the proportion equation
105,107.96 : 144,984.08 = 74,902.95 : x - Step 2: Convert to fraction form
105,107.96/144,984.08 = 74,902.95/x - Step 3: Cross multiply
105,107.96x = 144,984.08 × 74,902.95 - Step 4: Simplify right side
105,107.96x = 10,859,735,482.29 - Step 5: Solve for x
x = 10,859,735,482.29/105,107.96 - Step 6: Final answer
x = 103,319.82
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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.