Finding the Fourth Proportional to 129,344,785.80, 194,017,178.70 and 61,320,337.80
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Solution
The fourth proportional to 129,344,785.80, 194,017,178.70 and 61,320,337.80 is: 91,980,506.70
Step by Step Solution
- Step 1: Write the proportion equation
129,344,785.80 : 194,017,178.70 = 61,320,337.80 : x - Step 2: Convert to fraction form
129,344,785.80/194,017,178.70 = 61,320,337.80/x - Step 3: Cross multiply
129,344,785.80x = 194,017,178.70 × 61,320,337.80 - Step 4: Simplify right side
129,344,785.80x = 11,897,198,936,886,964 - Step 5: Solve for x
x = 11,897,198,936,886,964/129,344,785.80 - Step 6: Final answer
x = 91,980,506.70
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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.