Finding the Fourth Proportional to 138,280,809.80, 207,421,214.70 and 131,903,517.80
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Solution
The fourth proportional to 138,280,809.80, 207,421,214.70 and 131,903,517.80 is: 197,855,276.70
Step by Step Solution
- Step 1: Write the proportion equation
138,280,809.80 : 207,421,214.70 = 131,903,517.80 : x - Step 2: Convert to fraction form
138,280,809.80/207,421,214.70 = 131,903,517.80/x - Step 3: Cross multiply
138,280,809.80x = 207,421,214.70 × 131,903,517.80 - Step 4: Simplify right side
138,280,809.80x = 27,359,587,885,279,068 - Step 5: Solve for x
x = 27,359,587,885,279,068/138,280,809.80 - Step 6: Final answer
x = 197,855,276.70
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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.