Finding the Fourth Proportional to 142,149.62, 196,158.04 and 77,605.99
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Solution
The fourth proportional to 142,149.62, 196,158.04 and 77,605.99 is: 107,091.65
Step by Step Solution
- Step 1: Write the proportion equation
142,149.62 : 196,158.04 = 77,605.99 : x - Step 2: Convert to fraction form
142,149.62/196,158.04 = 77,605.99/x - Step 3: Cross multiply
142,149.62x = 196,158.04 × 77,605.99 - Step 4: Simplify right side
142,149.62x = 15,223,038,206.25 - Step 5: Solve for x
x = 15,223,038,206.25/142,149.62 - Step 6: Final answer
x = 107,091.65
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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.