Finding the Fourth Proportional to 80,880,156.60, 121,320,234.90 and 80,376,271.80
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Solution
The fourth proportional to 80,880,156.60, 121,320,234.90 and 80,376,271.80 is: 120,564,407.70
Step by Step Solution
- Step 1: Write the proportion equation
80,880,156.60 : 121,320,234.90 = 80,376,271.80 : x - Step 2: Convert to fraction form
80,880,156.60/121,320,234.90 = 80,376,271.80/x - Step 3: Cross multiply
80,880,156.60x = 121,320,234.90 × 80,376,271.80 - Step 4: Simplify right side
80,880,156.60x = 9,751,268,175,162,246 - Step 5: Solve for x
x = 9,751,268,175,162,246/80,880,156.60 - Step 6: Final answer
x = 120,564,407.70
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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.