Finding the Fourth Proportional to 140,918,863.80, 211,378,295.70 and 80,452,687.80
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Solution
The fourth proportional to 140,918,863.80, 211,378,295.70 and 80,452,687.80 is: 120,679,031.70
Step by Step Solution
- Step 1: Write the proportion equation
140,918,863.80 : 211,378,295.70 = 80,452,687.80 : x - Step 2: Convert to fraction form
140,918,863.80/211,378,295.70 = 80,452,687.80/x - Step 3: Cross multiply
140,918,863.80x = 211,378,295.70 × 80,452,687.80 - Step 4: Simplify right side
140,918,863.80x = 17,005,952,031,648,180 - Step 5: Solve for x
x = 17,005,952,031,648,180/140,918,863.80 - Step 6: Final answer
x = 120,679,031.70
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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.