Finding the Fourth Proportional to 99,861,069.20, 149,791,603.80 and 84,744,525.20
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Solution
The fourth proportional to 99,861,069.20, 149,791,603.80 and 84,744,525.20 is: 127,116,787.80
Step by Step Solution
- Step 1: Write the proportion equation
99,861,069.20 : 149,791,603.80 = 84,744,525.20 : x - Step 2: Convert to fraction form
99,861,069.20/149,791,603.80 = 84,744,525.20/x - Step 3: Cross multiply
99,861,069.20x = 149,791,603.80 × 84,744,525.20 - Step 4: Simplify right side
99,861,069.20x = 12,694,018,342,977,518 - Step 5: Solve for x
x = 12,694,018,342,977,518/99,861,069.20 - Step 6: Final answer
x = 127,116,787.80
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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.