Finding the Fourth Proportional to 140,919,119.80, 211,378,679.70 and 80,452,943.80
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Solution
The fourth proportional to 140,919,119.80, 211,378,679.70 and 80,452,943.80 is: 120,679,415.70
Step by Step Solution
- Step 1: Write the proportion equation
140,919,119.80 : 211,378,679.70 = 80,452,943.80 : x - Step 2: Convert to fraction form
140,919,119.80/211,378,679.70 = 80,452,943.80/x - Step 3: Cross multiply
140,919,119.80x = 211,378,679.70 × 80,452,943.80 - Step 4: Simplify right side
140,919,119.80x = 17,006,037,038,422,300 - Step 5: Solve for x
x = 17,006,037,038,422,300/140,919,119.80 - Step 6: Final answer
x = 120,679,415.70
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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.