Finding the Fourth Proportional to 12,143,077.80, 18,235,611.90 and 6,474,373.80
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Solution
The fourth proportional to 12,143,077.80, 18,235,611.90 and 6,474,373.80 is: 9,722,754.80
Step by Step Solution
- Step 1: Write the proportion equation
12,143,077.80 : 18,235,611.90 = 6,474,373.80 : x - Step 2: Convert to fraction form
12,143,077.80/18,235,611.90 = 6,474,373.80/x - Step 3: Cross multiply
12,143,077.80x = 18,235,611.90 × 6,474,373.80 - Step 4: Simplify right side
12,143,077.80x = 118,064,167,912,328.20 - Step 5: Solve for x
x = 118,064,167,912,328.20/12,143,077.80 - Step 6: Final answer
x = 9,722,754.80
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1.5x scale
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.