Finding the Fourth Proportional to 141,658,053.48, 195,482,952.36 and 78,930,910.44
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Solution
The fourth proportional to 141,658,053.48, 195,482,952.36 and 78,930,910.44 is: 108,921,780.49
Step by Step Solution
- Step 1: Write the proportion equation
141,658,053.48 : 195,482,952.36 = 78,930,910.44 : x - Step 2: Convert to fraction form
141,658,053.48/195,482,952.36 = 78,930,910.44/x - Step 3: Cross multiply
141,658,053.48x = 195,482,952.36 × 78,930,910.44 - Step 4: Simplify right side
141,658,053.48x = 15,429,647,405,273,948 - Step 5: Solve for x
x = 15,429,647,405,273,948/141,658,053.48 - Step 6: Final answer
x = 108,921,780.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.