Finding the Fourth Proportional to 140,919,129.30, 211,378,693.95 and 80,452,953.30
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Solution
The fourth proportional to 140,919,129.30, 211,378,693.95 and 80,452,953.30 is: 120,679,429.95
Step by Step Solution
- Step 1: Write the proportion equation
140,919,129.30 : 211,378,693.95 = 80,452,953.30 : x - Step 2: Convert to fraction form
140,919,129.30/211,378,693.95 = 80,452,953.30/x - Step 3: Cross multiply
140,919,129.30x = 211,378,693.95 × 80,452,953.30 - Step 4: Simplify right side
140,919,129.30x = 17,006,040,192,974,340 - Step 5: Solve for x
x = 17,006,040,192,974,340/140,919,129.30 - Step 6: Final answer
x = 120,679,429.95
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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.