Finding the Fourth Proportional to 171,534,231.20, 257,301,346.80 and 69,245,616.80
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Solution
The fourth proportional to 171,534,231.20, 257,301,346.80 and 69,245,616.80 is: 103,868,425.20
Step by Step Solution
- Step 1: Write the proportion equation
171,534,231.20 : 257,301,346.80 = 69,245,616.80 : x - Step 2: Convert to fraction form
171,534,231.20/257,301,346.80 = 69,245,616.80/x - Step 3: Cross multiply
171,534,231.20x = 257,301,346.80 × 69,245,616.80 - Step 4: Simplify right side
171,534,231.20x = 17,816,990,462,636,706 - Step 5: Solve for x
x = 17,816,990,462,636,706/171,534,231.20 - Step 6: Final answer
x = 103,868,425.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.