Finding the Fourth Proportional to 129,295,615.70, 194,037,901.95 and 91,031,863.70
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Solution
The fourth proportional to 129,295,615.70, 194,037,901.95 and 91,031,863.70 is: 136,614,314.01
Step by Step Solution
- Step 1: Write the proportion equation
129,295,615.70 : 194,037,901.95 = 91,031,863.70 : x - Step 2: Convert to fraction form
129,295,615.70/194,037,901.95 = 91,031,863.70/x - Step 3: Cross multiply
129,295,615.70x = 194,037,901.95 × 91,031,863.70 - Step 4: Simplify right side
129,295,615.70x = 17,663,631,842,946,364 - Step 5: Solve for x
x = 17,663,631,842,946,364/129,295,615.70 - Step 6: Final answer
x = 136,614,314.01
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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.