Finding the Fourth Proportional to 163,772,605.20, 245,658,907.80 and 77,679,163.20
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Solution
The fourth proportional to 163,772,605.20, 245,658,907.80 and 77,679,163.20 is: 116,518,744.80
Step by Step Solution
- Step 1: Write the proportion equation
163,772,605.20 : 245,658,907.80 = 77,679,163.20 : x - Step 2: Convert to fraction form
163,772,605.20/245,658,907.80 = 77,679,163.20/x - Step 3: Cross multiply
163,772,605.20x = 245,658,907.80 × 77,679,163.20 - Step 4: Simplify right side
163,772,605.20x = 19,082,578,390,529,956 - Step 5: Solve for x
x = 19,082,578,390,529,956/163,772,605.20 - Step 6: Final answer
x = 116,518,744.80
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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.