Finding the Fourth Proportional to 98,736,292.74, 136,129,472.02 and 76,672,359.30
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Solution
The fourth proportional to 98,736,292.74, 136,129,472.02 and 76,672,359.30 is: 105,709,536.99
Step by Step Solution
- Step 1: Write the proportion equation
98,736,292.74 : 136,129,472.02 = 76,672,359.30 : x - Step 2: Convert to fraction form
98,736,292.74/136,129,472.02 = 76,672,359.30/x - Step 3: Cross multiply
98,736,292.74x = 136,129,472.02 × 76,672,359.30 - Step 4: Simplify right side
98,736,292.74x = 10,437,367,790,036,738 - Step 5: Solve for x
x = 10,437,367,790,036,738/98,736,292.74 - Step 6: Final answer
x = 105,709,536.99
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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.